Youichi Tanaka

Youichi Tanaka serves as a steadfast pillar of support throughout the story. As Mabuchi Kou's older brother and an English teacher at the protagonists' school, he combines a gentle nature with a sharp sense of observation. Whenever his younger brother or his students find themselves lost or confused, Youichi steps in with calm, mature guidance. Despite being well-liked among female students, he never loses sight of his responsibilities as an educator. His thoughtful and measured handling of student Murashita Shuko's feelings toward him highlights his role as a dependable and compassionate figure in the narrative.