[Marsmallow Dan] Haruna wa Kyou kara Sachiko ni Narimashita.

Haruna, a devoted daughter, watches her dementia‑stricken father struggle with daily tasks, feeling both responsibility and longing as she promises to bathe him and reflects on memories of a past intimacy. When the moment arrives, she finds herself overcome with desire, recalling a vivid encounter from two years ago that fuels her current passion. The story weaves tender caregiving with raw sexual tension, inviting readers into a bittersweet narrative of love, memory, and forbidden desire.