剧情:暗黑次元的海德
Taking place between chapters eight and nine of the VN, anime episode 18, in the gamma world line divergence 2.615074%, the drama CD follows Okabe when attempting to undo Ruka's D-Mail throws him into a far-removed world line. Okabe comes to from the effects of Reading Steiner to find himself in a dark alley and a bloodied man dead at his feet. In this world line he is a Rounder and many of his enemies and allies are seemingly reversed.
该广播剧发生在本篇游戏的第八章和第九章之间，即动漫第18集，位于伽玛世界线分歧2.615074%，故事讲述了试图撤销漆原琉华的D-Mail的冈部被扔进一条遥远的世界线。冈部由于Reading Steiner的影响发现自己在一条黑暗的巷子里，并发现一个满身是血的男人死在了他的脚下。在这条世界线，他是一个Rounder，看起来他的敌人和盟友似乎都反转了。
Okabe discovers that here he is a Rounder, codename M3, and has long been partnered with Kiryuu Moeka. The two have just completed a mission to kill Europol agents, who had uncovered their identities. Nothing makes sense to Okabe. When he notices that Moeka is able to talk normally with him in this world line, he realizes that the world line divergence has changed drastically. He runs to the lab to send another D-Mail, but runs into Makise Kurisu and Amane Suzuha. Though shocked that Suzuha is there, things become even worse as Kurisu had witnessed the Rounder Okabe killing the Europol agent. Suzuha is clearly hostile, since her reason for time traveling in this world line is to save Japan from future Okabe's evil. Kurisu begs him to stop, "reminding" him that Mayuri does not have much time left. Things escalate when they do not believe that he just arrived from another world line and Kurisu begins to call the police. However, Moeka rescues him with a stun grenade. After running away, Okabe stunned, moves to go see Mayuri. Moeka, who had heard Okabe's conversation with Kurise and Suzuha, calls FB and tells him that the machine is confirmed to be a time machine, as M3 said so.
冈部发现，在这里他是一位代号为M3的Rounder，并且和桐生萌郁做了很久的搭档。他们俩刚完成了暗杀一位知晓他们身份的欧洲特工的任务。所有事情对冈部来说都很不合理。当他注意到萌郁在这条世界线可以普通地与他说话时，他意识到世界线变动率彻底地改变了。他冲向Lab，想要发送另一封D-Mail，但是他在路上撞见了牧濑红莉栖和阿万音铃羽。铃羽的在场让冈部感到十分震惊。不仅如此，红莉栖之前目击到了Rounder冈部杀死欧洲特工的场景。事情变得更糟糕了。很明显，铃羽敌视着冈部，因为在这条世界线她时间旅行的理由就是想要从未来冈部的邪恶统治中拯救日本。红莉栖恳求冈部不要再这样做了，同时也“提醒”了他真由理的时间不多了。她们不相信冈部刚从另一条世界线RS到这条世界线，不仅如此红莉栖还打算叫警察。事情不断恶化着。就在这时，萌郁用一颗震撼弹救走了他。冈部逃走之后，（对发生的事）惊呆了。他决定动身去看看真由理。听到了冈部与红莉栖和铃羽对话的萌郁打电话给FB告诉他，正如M3所说，那台机器确实是一台时间机器。
Entering Mayuri's hospital room, Okabe sees Urushibara Ruka is there as well. More and more things are clearly different from the Okabe of this world line being known to drink Mountain Dew to Mayuri calling Okabe "Okabe-kun". Okabe tells Mayuri that he has no memories of this world line and asks her to tell him how they know each other. Mayuri, though confused, tells him that they were childhood friends but after the Y2K crash their parents died and they were separated for seven years. Upon discovering that Mayuri is dying of cancer, Okabe leaves to clear his head on the hospital roof.
进入真由理的病房后，冈部看到漆原琉华也在那里。越来越多的记忆中的事情与这条世界线的冈部的经历有明显的不同。例如最喜欢喝的饮料变成了Mountain Dew（激浪）以及真由理对他的称呼变为了“冈部君”。于是，冈部告诉真由理他没有这条线的记忆，并让她告诉自己他们怎么认识彼此的。尽管感觉很迷惑，真由理还是告诉了他。他们是青梅竹马，但是他们的双亲都死在千年虫事件中，因此他们被分开了7年。这之后冈部还发现真由理身患癌症（变成秃头）即将死去，冈部离开病房，爬上了医院屋顶想要清醒一下头脑。
Ruka finds him there and confronts him with what he just heard from Kurisu. Moeka appears and confirms the truth saying there is not point in trying to hide it longer. Once Ruka leaves, Okabe laments that everyone is leaving him and it is his fault, since he carelessly messed with time. He is unable to accept that others are still suffering because of his mistakes. FB calls and Okabe declares he is not a Rounder, but is told to go cool his head. Moeka tells him that Rounders can pressure the police so there is no need to worry about Kurisu's reporting him. However, they need to go into hiding. Okabe tries to reject her. He blames her for killing Mayuri and betraying them, but she replies that they have done numerous missions together and he has saved her life many times. When he tells her that was a different "him", she replies in kind that the "her" he speaks of is also a different "her". She wants to help him and presses him to hide at least until tomorrow.
琉华发现冈部在屋顶上，他用从红莉栖那里听说的事情与他对峙。这时，萌郁出现并确认了琉华所说的一切，她认为已经没有必要再试图隐瞒真相了。琉华离开后，冈部感到非常悲伤，因为他身边的所有人都在远离他，而且这一切都是他粗心地乱搞时间的错。他不能接受其他人因为他的失误而受伤。随后，FB打电话过来，冈部声明他不是Rounder，但是FB要求他去冷静一下。萌郁告诉他，Rounder可以对警察施压，所以不用担心红莉栖报警，但他们还是需要隐藏起来。冈部试图拒绝她。他指责萌郁杀死了真由理，并背叛了Lab众，但是她回答说，冈部和她一起一起完成了无数任务，而且冈部还救了她很多次。当冈部试图辩解说那是一个不一样的“冈部”时，萌郁用同样的理由反驳他：他提到的那个“萌郁”也是一个不一样的“萌郁”。萌郁想要帮助他。她希望冈部至少可以在这里藏匿到明天。
They arrive at her apartment. She offers him kebab that they apparently always ate together. He asks her why she is still coming near him. She acknowledges that the person he is now is different than the Okabe of this world line. However, she still feels like his true nature has not changed. In this world line, Okabe saved her when she tried to commit suicide and told her to become a Rounder. He is like family to her, and she wants to help him. Okabe still pushes her away.
冈部和萌郁到达了她的公寓。她提供了烤肉，很明显他们俩经常一起吃。冈部问萌郁为什么她仍呆在自己身边。她承认，现在的他确实和这条世界线之前的冈部不一样。但是，她仍然能够感觉到，他的本性没有改变。在这条世界线，冈部在她想要自杀的时候救了她，并且让她成为了一名Rounder。冈部对她来说就像一位家人。她想要帮助他。然而，冈部仍然拒绝了她。
The next day at 12:02PM, Faris Nyannan arrives at the lab where Hashida Itaru, Suzuha, and Kurisu are. Kurisu wonders what Okabe meant by coming from another world line. Suzuha tells them that the multiple world lines are constantly changing. However, it is impossible for a person to be aware of it. Faris thinks, however, that Okabe might have a special power that allows him to remember other world lines and wants to test him with her ability to see through people's lies. Suzuha warns her against getting close to Okabe and reveals more about the horrors of his dictatorship in 2036, as the leader of the Rounders, member of the Committee of 300, Hououin Kyouma. He killed her parents, friends, and mass-murdered many others. As a member of the resistance against him, she suffered a major wound to the back herself. Suzuha wants to destroy the Phone Microwave before Okabe can steal it. However, Kurisu is hesitating. While she always found Okabe cold, he was kind. The Okabe she saw murder a man was not the Okabe she knows. However, the Okabe right after that was completely different person. She had never seen Okabe with such a sad expression before.
第二天的12:02PM，菲莉丝喵喵、桥田至、铃羽、红莉栖齐聚在Lab。红莉栖想知道冈部所说的，“来自另一条世界线”是什么意思。铃羽告诉他们，世界线多种多样，它一直在变化着，但是不可能有人意识到世界线变动。菲莉丝却认为，冈部可能有让他可以记住其他世界线的特殊能力，并且菲莉丝想要用她那能够看穿他人的谎言的能力来测试他。铃羽警告她不要接近冈部。她透露了更多2036年的事情：在2036年冈部同时身为Rounder首领、300人委员会的成员以及“凤凰院凶真”。他杀死了铃羽的父母、朋友，还大规模屠杀了其他许多人。作为抵抗组织的一员，铃羽自己背部就受到过一次很严重的伤。铃羽想要在冈部偷走电话微波炉之前毁掉它。但是红莉栖犹豫了。尽管她一直感觉冈部很冷漠，但是他还是很和善。她看到的谋杀别人的冈部不是她认识的冈部。然而，那之后的冈部更是完全不同的一个人。她从未见冈部有过如此悲伤的表情。
Almost two hours later, Moeka approaches Ruka at the shrine. She asks him if his mother ever received a message on her pager with a future sent date. Ruka confirms that she did receive the strange sequence 2929831831 once and then once again about a month after. Not understanding the sequence, she showed the message to a company president friend of Ruka's father. A few days later, a SERN scientist who had heard about it came. This scientist later developed the vaccine program for the Y2k crash. Moeka reflects that SERN probably caused the crash since they had an antidote ready and under their control. This is something that bears investigating. In her thoughts, however, Moeka is at a loss about what to do after investigating. Okabe wishes to make this world line into something that never happened, meaning she will no longer be by Okabe…
大约两个小时之后，萌郁在神庙接触了琉华。她询问他，他的母亲是否曾在传呼机上收到过一封发信日期是未来的信息。琉华确认了一下，母亲的确有收到过一个奇怪的序列“2929831831”，而且一个月之后还收到过一次。琉华的母亲不能理解这个序列，就把这条信息转交给了琉华父亲的一个公司总裁的朋友看。几天之后，一位听说了这封信息的SERN科学家找了过来。这位科学家后来开发了千年虫事件的疫苗程序。萌郁立刻反应了过来，SERN可能引发了千年虫问题，他们已经准备好了解药，一切都在SERN的掌握中。这很值得调查。但是萌郁不知道调查完之后应该做些什么。冈部希望把这条世界线变成从来没发生过的事情，这意味着她将不再能陪伴在冈部身边......
Ruka begs her to not get in the way of Okabe and Mayuri's remaining time. However, Moeka warns him once again that Okabe is not the kind of person Ruka thinks he is. Ruka holds his ground that though Okabe is difficult to get close to he at least is very kind to Mayuri and visits her everyday. Moeka claims that behavior is just an illusion, but Ruka says that yesterday was the first time Okabe did not drink Mountain Dew he always does and seemed so sad. Moeka thinks that is true. Okabe is normally like an emotionless machine, but yesterday he seemed about to break down and cry. She wonders if it is true that he came from a different world line and if so, what she really should do.
琉华恳求萌郁不要妨碍冈部和真由理，不要干扰他们最后的时间。然而，萌郁再一次警告他，冈部不是琉华认为的那种人。琉华坚持他的立场，他认为，即使接近冈部非常困难，但他至少对真由理非常友好，而且每天都拜访她。萌郁说这种行为只是一种幻想。但是，琉华说昨天是冈部第一次不喝Mountain Dew，而那是他最喜欢喝的饮料。同时他也看起来非常悲伤。萌郁也这么想。冈部通常就像一台没有情感的机器，但是昨天他看起里几乎要崩溃到哭了。她在想他是不是真的来自于一条不一样的世界线。如果是真的，她应该怎样做。
FB calls and orders her to work with another Rounder team to take the time machine from the lab and secure the three scientists that made it and deliver them to SERN. Since Okabe can no longer be trusted, he is to be taken as well. Moeka begs FB to do something for Okabe. FB replies that she should make up her mind now, eventually advising her that if she is not prepared, then she should choose to do something she shouldn't and follow her feelings.
FB打电话给萌郁，要求她与另一个Rounder队伍去从Lab夺走时间机器，抓住三位制造它的科学家送到SERN。同时，既然冈部不再能被相信，那么他也需要被处理掉。萌郁求FB为冈部做点事情。FB回复说，她现在应该做抉择了。FB建议她，如果没有做好准备就选择做一些她不该做的，跟随内心的想法。
Moeka returns to her apartment and tells Okabe about their next mission. Okabe wants to run to warn them, but Moeka tries to stop him. If he turns against the Rounders, his life is forfeit. Even when she finally reveals that he is to be captured too, he refuses to stop. He tells her he cannot be killed anyway, since causality will prevent his death at least until the year 2036. When she tells him to quit joking around, he turns it back on her asking why she betrayed the Rounders by telling him about the orders to capture him. Declaring that he will not stop, that he has no attachment to this world line, he leaves. After thinking, Moeka decides to follow FB's advice to do as she wishes and chooses to keep Okabe from being captured by SERN, even though according to Okabe that means that her relationship to him will disappear. She runs after him. Okabe asks her why she wants to help him even though her life will be forfeit for betraying the Rounders. She declares that she is his partner and wants to be his strength. He tells her that he is a completely different man than the Okabe Rintarou who stopped her from killing herself and partnered with her in work. He asks if she still will throw away everything to help him. She says yes. Okabe is like a different person. However, as she told him yesterday, his true nature still has not changed. Also, she tells him that him calling her by her real name and not her codename like he always had done before, made her really happy. For the first time, Okabe truly accepts what she says and asks for her help. He names their strategy "Operation Dvergr", declaring that he will negate this world by turning into an evil dvergr.
萌郁回到了她的公寓，她告诉了冈部Rounder的下一个任务。冈部想要跑去警告Lab，但是萌郁阻止了他。如果他反抗Rounder，那么他的生命就会被夺走。即使她最终告诉了冈部Rounder要抓住他，冈部仍然不愿意停下来。冈部告诉她自己不会被杀死，因为因果律保证他在2036年之前不会死。萌郁让他不要再开玩笑，但冈部反问她为什么背叛Rounder，为什么告诉他Rounder的命令。冈部宣布自己不会停下来，而且他已经对这条世界线没有依恋。于是他离开了。萌郁思考过后，决定遵从FB的建议，她要去做她想要做的事情，即保护冈部不被SERN抓住，尽管据冈部所说，这意味着她和他的关系将会消失。她追上了冈部。冈部问她，为什么即使生命会被夺走她还是愿意背叛Rounder，选择帮助他。萌郁说自己是他的搭档，希望成为他的力量。冈部告诉她，自己跟阻止她自杀并在工作上与她搭档的冈部伦太郎完全不一样。冈部问她是否仍然愿意抛弃一切来帮助他。萌郁说愿意。冈部就像一个不一样的人。但正如她昨天告诉他的，他真正的本性没有改变。并且，她告诉冈部，他愿意喊她真名而不是像以前一样喊代号让她真的很开心。冈部第一次真正接受了她的话并且寻求了她的帮助。冈部将这次行动命名为“Operation Dvergr”，表明他将会化作邪恶的Dvergr来否定这个世界。
In the lab, Faris, Ruka, Suzuha, Kurisu, and Daru are there, as Kurisu tries to prep the Phone Microwave in an attempt to go against the Rounders. Okabe and Moeka are outside. It took awhile to confirm the forwarding address of the D-mail Okabe needs to send, so there is only a half hour left before the Rounders are due to strike the lab. The 42" CRT is turned on, so they only need to break in past those in the lab to send the D-mail. Moeka preps a gun, and after a bit of hesitation on both sides, Okabe accepts it, though he has no intention to kill. Moeka advises him on using the weapon, and encourages him to not worry, she will prevent him from having to shoot. He asks her to not shoot as much as she can. Okabe decides to go in first, but is clearly shaking. Moeka startles him by giving him a kiss. She tells him that even if in the world he was in before they were enemies, here and now she is his ally and will be his partner even if the whole world turns on him, so he can rely on her. Okabe acknowledges that he trusts the her of here and now. Remarking that she wishes they could eat kebabs together again, she suddenly begins the countdown for their break in.
菲莉丝、琉华、铃羽、红莉栖和桶子都在Lab内。红莉栖想要准备好电话微波炉来反抗Rounder。冈部和萌郁在外面。他们花了一些时间来确认冈部要发送的D-Mail的新地址，所以距离Rounder袭击Lab只剩下半个小时了。42寸布朗管已经被打开，所以他们只需要闯入Lab，突破Lab众从而发送D-Mail。萌郁准备了一把枪，在双方都犹豫了一阵子之后，尽管没有杀人的意图，冈部还是接受了。萌郁建议冈部使用武器并鼓励他，让他不要担心，她会避免让他射击。冈部也要求萌郁尽可能不要射击。冈部决定先进去，但他很明显地颤抖着。萌郁吻了他一下，吓了他一跳。萌郁告诉他，即使在他曾经在的世界线他们是敌人，在这个时间这个地点，她仍是他的队友。而且即使整个世界反对他，她也会成为他的搭档，所以他可以依靠她。冈部确认了，自己此时此地相信着她。萌郁说出自己希望可以再一次一起吃烤肉，然后突然开始了他们闯入Lab的倒数。
Okabe and Moeka hold Ruka, Faris, Daru, and Kurisu at gunpoint. Though Kurisu tells Okabe she misjudged him, he steels himself to tell them all to kneel, facing the wall. Ruka tells him he looks so sad. When he says he is not, Faris can tell that he is lying. However, he assures them that he is serious. Suzuha dashes out to attack him and disarms him and threatens him to keep Moeka from shooting. Before she can have them tied up, Okabe tackles her and with the gun Moeka tosses to him he holds Ruka hostage. Kurisu and Faris plead with Okabe to stop this, but he refuses. No matter what he will send the D-mail. To Ruka, who is absolutely terrified, Okabe assures in a whisper that if he does not resist, he will not be harmed. He gives Ruka a memo and tells him to input the information on it into the X68k computer attached to the Phone Microwave. Just as Okabe is about to use his phone to send the D-mail, a sniper from the other Rounder team fires, striking Okabe. Gunfire breaks out and protecting Ruka, Okabe is hit repeatedly. Within the shelter of the development room, Okabe is heavily bleeding and barely hanging on. Ruka is flustered and Moeka runs over. Okabe begs them to send the D-mail from his phone. Moeka agrees and wishes him well. Okabe thanks Moeka just before Reading Steiner kicks in.
冈部和萌郁用枪口控制住了琉华、菲莉丝、桶子和红莉栖。尽管红莉栖告诉冈部自己错判了他，但他还是咬牙要求他们全都面对着墙跪下。琉华告诉他，他看起来很悲伤。他否定了自己悲伤的观点，但菲莉丝分辨出他在撒谎。但是，冈部保证自己是认真的。这时，铃羽冲出攻击冈部，解除了他的武装并威胁他，要求下令禁止萌郁射击。在铃羽把他们绑起来之前，冈部控制住了铃羽，并且用萌郁扔给他的枪挟持琉华做了人质。红莉栖和菲莉丝恳求他不要再这样做了，但是冈部拒绝了。不论如何，他都要发送D-Mail。对于被完全吓到的琉华，冈部小声保证，只要不抵抗他就不会被伤害。他给了琉华一张便笺，要求他将上面的内容输入到连接着电话微波炉的X68k电脑上。就在冈部准备用他的手机发送D-Mail时，一个来自另一个Rounder小队的狙击手射击击中了冈部。枪声响起，为了保护琉华，冈部再次被击中。在开发室的掩体中，冈部很严重地流着血，难以支撑下去。琉华陷入了慌乱。萌郁冲过去，冈部让她用他的手机发送D-Mail。萌郁同意了并祝愿他一切都好。冈部感谢了萌郁，随后Reading Steiner发动。
A dream-like sequence plays out in which all eight lab members are at the beach, when Moeka suddenly says she wants to eat kebabs. For some reason she feels like Okabe might want one.
镜头来到了一个如梦似幻的沙滩上，八位Labmem都在这里。萌郁突然说她想吃烤肉。因为某些原因她感觉冈部也想吃一些。
