Batsuichi Ningyo, Koi ni Oboreru.

Mizuho, ​​a 32-year-old woman, divorces her husband after 10 years of marriage due to his infidelity and returns to her parents' home. On her way, she stops by the sea and discovers a man drowning. Mizuho, ​​with her strong-willed, committee-leader personality, cannot ignore the situation and attempts to save him, disregarding her own safety, but ends up drowning herself. When Mizuho wakes up, she finds herself in a guesthouse run by the man she tried to save... This is the beginning of a mature romance for Mizuho, ​​a serious woman who is also uncomfortable around men. (Source: Natalie, translated)