Shigoto de Tsukareta Shachiku no Ore ni Bishoujo ga Karande Kuru no daga……
仕事で疲れた社畜の俺に美少女が絡んでくるのだが……
A 27-year-old man works at a trading firm and expresses exhaustion with his life. After saying he wants to die, a high school girl-like figure named Hina appears and tells him he has one year left to live. He clarifies the misunderstanding but learns the only way to reverse the sentence is by falling in love and marrying. Struggling with this, Hina offers to teach him about love. She helps with his work, takes him to places for dates, and shows him affection. While her behavior feels intense, he accepts it as part of learning about relationships.