Sagiri, a rogue kunoichi from the same exiled ninja clan as Suzuka and Tsukikage, relentlessly sabotages their pursuit of tranquility. Her vendetta arises from a past intimacy with Tsukikage, who once unveiled to her "the joy of being a woman," spurring her crusade to sever his bond with Suzuka. Blending stealth, combat prowess, and emotional manipulation, she orchestrates clashes that escalate from psychological subterfuge to explosive confrontations. Her relentless interference culminates in a farcical defeat when Tsukikage subdues her with a whimsical reprimand, forcing her to grudgingly concede the couple’s enduring connection. Though her history beyond shared clan ties remains unexplored, her narrative arc orbits solely around this triangular conflict, eschewing deeper backstory or expansion into ancillary media. Through her struggles, the story probes unrequited yearning and the friction between individual passion and the collective stability demanded by ninja tradition.