Obstetrician-gynecologist and Choko's high school first love. Proposes a casual relationship, becomes entangled with a teenage girl he cares for, and after a period of separation and introspection on a remote island, reunites with Choko.
Friendship evolves into a romantic involvement following a high school reunion
Formal or informal guardianship arrangement for the 17-year-old ward
Indirect social link through shared acquaintances
Explore the full interactive character relationship map of Sefure no Hinkaku: Ketsui