古屋先生は杏ちゃんのモノ

In a Kyoto restaurant, high schooler An Usami witnesses a man’s marriage proposal get brutally rejected, leaving him devastated. The next day, she discovers that man, Ryōhei Furuya, is her new teacher, who exudes confidence in class despite his earlier humiliation. Intrigued by his unexpected depth, An develops feelings for him and boldly pursues him. However, Furuya maintains a strict professional boundary, firmly rejecting her advances due to their teacher-student dynamic. An persists, determined to close the gap between them, navigating the challenges of her feelings and his reserved nature. (Unreviewed summary by Grok 3)