Tōson Shimazaki exists within the narrative framework of his relationship with Kitamura Tōkoku, specifically during Kitamura's release event. This relationship dynamic defines a fundamental element of Tōson's portrayal. Kitamura Tōkoku exhibits an intensely obsessive fixation on Tōson, distinguished by extreme possessiveness. This fixation compels Kitamura to openly dismiss their associates when present and attempt to kill them, driven exclusively by his overwhelming obsession with preserving an exclusive connection to Tōson.