In Episode Two, Kouki meets Yuki who is trying to find her missing brother, Shogo, who was a hacker in Tokyo. There is a string of murders occurring in the meantime - many of them related to a case Rin and Mimi were on, and Rin and the two discovered that Shogo is behind these crimes. Yuki's brother had turned into an "angel" due to contact with Time Fruit by Apos and committed the recent murders as acts of revenge.
Normally, an angel is short-lived, living at the most for six to seven days, but Shogo's willpower was such that he was able to last-out far longer than a normal angel's lifespan. After deducing who Shogo's final victim will be, the assassin Stamp, Rin kills Shogo while fighting her urge to mate with Shogo. After the battle, she manages to give his time fruit to Kouki despite an appearance from Apos.