Ep. 23: Kusuo confronts his unusual past through multiple time travel attempts to second grade.

23

Kusuo engages in several time travel missions to his second-grade period, aiming to alter events involving a student named Takashi who bullied Touma. Although young Kusuo had previously assisted Touma by healing wounds and creating distractions, these interventions fail to improve the current timeline or result in a post-apocalyptic world. Frustrated by the lack of positive change or the severe consequences of his actions, Kusuo stops trying to modify the past. He finally admits to Touma that he possesses psychic abilities. Touma accepts this revelation and expresses gratitude for the help Kusuo provided during that time, resolving the mystery surrounding his powers without further temporal interference.