Ageduperi Stories

Izuku Midoriya and Kai Chisaki are brothers. When his brother is asked to work with the LOV Kai asks Izuku who tells him yes. Eri is Eri Shimura aka Eri Shigaraki. She is Tomura's older sister. Eri and Izuku are the only ones that can touch Kai and be in his room. How will Kai and Eri react when Izuku bf cheats on him?