Despite the change in divergence, Mayuri's death still takes place, albeit a day later than in previous timelines. Rintar? asks for Kurisu's help, who theorizes that, since negating Rintar?'s D-Mail about Suzuha delayed the attack, undoing the effects of the other D-Mails could bring them back to a world line where they have an IBN 5100, letting them hack into SERN and delete the records that set them on Rintar?'s trail. Rintar? starts by trying to figure out how to reverse Rumiho's D-Mail, while helping her evade a rival gaming gang. Rintar? takes Rumiho to the place where her maid cafe used to be and tells her about the way Akihabara was. Rumiho comes to remember the previous timeline and the D-Mail she sent: a fake ransom note, which prevented her father from boarding a plane fated to crash. The rival gang catches up to them but they are rescued by the arrival of Rumiho's father. Speaking to him, Rintar? learns that Suzuha gave him the IBN 5100, but he was forced to sell it in order to pay for the fake kidnapping's ransom. After accepting the reality of her father's death, Rumiho agrees to send a D-Mail cancelling out her previous one, turning Akihabara back into a moe hub. The IBN 5100, however, still remains out of reach.