Shinji Hyoudou is the adoptive younger brother of everyone's favorite perverted pawn. Shinji too gets caught up within the supernatural world, during his older brothers date with his new girlfriend results in both of the brothers dying due to having a Sacred Gear. And both being reincarnated by one of the leaders of the area of Kouh, Issei reincarnated under Rias Gremory, Shinji being reincarnated under Sona Stiri.