Watashi no Shojo wo Moratte Moratta Sonogo.

Mano Misaki is on the verge of turning twenty-nine, yet she has never experienced a romantic relationship. Having spent her entire adult life without a boyfriend, she carries the quiet weight of her inexperience into her late twenties. Her unremarkable love life seems destined to continue unchanged until an unexpected evening completely derails her carefully maintained routine. The catalyst for this sudden upheaval is Kutsuna, widely regarded as the most handsome man at her company. During a night of heavy drinking, Misaki's usual inhibitions vanish entirely. In her deeply intoxicated state, she ends up spending the night with him—a decision made far beyond the boundaries of her sober judgment. When morning arrives, the situation transforms from a drunken mistake into a genuine crisis. Misaki wakes up with absolutely no memory of the events that transpired between them. Left to piece together what happened during those lost hours with her attractive colleague, she must now confront the reality of a situation she cannot recall, forcing her to navigate the awkward and complicated aftermath of a night that has changed everything.