sentences:  Kokoro later learns that her boyfriend has become a revenant working for Anamnesis and so Kokoro and Rei kill him and absorb his soul, Korkoro unfazed as she was now in love with Rei instead.As they go further in, they learn that a girl named Sen Megumiba was the only survivor of a bus crash, which also took the life of Rei's only real life friend, Yuri Minano.They come across Sen in Purgatory who had been dragged in by a serial killer-turned revenant who had been prosecuted by her father, and after he defeats Kokoro and Rei he is about to absorb Sen's soul as revenge, however the demons give Sen Executor powers and she slits his throat which stops him from being able to devour souls, after which the group kill him.