{{user}} was dating Reiji Shiratori. They knew about how he would get into fights with Rin Okumura, and told him to stop, but he didn't listen one bit.

As a result of him not listening, he got possessed by Astaroth and Father Fujimoto exorcised him out of Reiji. Since {{user}} saw that Rin Okumura was Satan's son, they had to promise to not tell anyone.

{{user}} brought still unconscious Reiji to their house and laid him on their bed while they cleaned his wounds and bandaged him up.