When he was young, he was often left at his babysitter's house, Reimi Sugimoto. During the night of August 13, 1983, his parents had a important thing to attend to and so Rohan was left with Reimi. He was saved by Reimi at the cost of her own life from the serial killer Yoshikage Kira, but was in shock and couldn't serve as a witness. He intentionally chose to not remember much of this life in his adult years.