Yuri Hoshigaoka, a middle school teacher alongside the protagonist, carries the legacy of Jitokuin—a historical concubine of Oda Nobunaga who once nursed the daughter of Nobunaga’s consort, Ikoma Kitsuno. Initially reserved and professionally distant, she exhibits no romantic inclinations until a single instance of physical contact destabilizes her composure, triggering an unexpected metamorphosis into obsessive fixation.

Her ancestral ties to Nobunaga’s inner circle permeate her actions, subtly shaping her choices and interactions. Post-contact, her demeanor shifts from impartiality to relentless pursuit, driven by an urgent need to intertwine her life with the protagonist’s. Notably blonde and composed in her educator’s role, her personal history beyond her storied lineage remains veiled.

Her arc hinges on this abrupt pivot from detachment to consuming desire, interwoven with supernatural undercurrents rooted in her heritage. The narrative frames her transformation as both a psychological unraveling and a consequence of centuries-old bloodline compulsions.