One of the critical turning points that dealt a fatal blow to Geto's crumbling ideals and his righteous doctrines, ultimately causing them to collapse entirely, was the death of Yu Haibara, a junior one year his junior who deeply idolized him.
Because Riko Amanai was still alive, Gojo Satoru recalled the entire course of the Star Plasma Vessel incident, thereby discovering suspicious points and undergoing an initial awakening.
Meanwhile, Suguru Geto's collapse along his chosen path of ideals was also delayed due to the survival of Riko Amanai.
Chapter 308