Xiehou ta de Shaonu Shidai  

Im Sorry, 맘마미안, Mama Mian, 邂逅她的少女时代, I'm Sorry, 媽媽咪安, Pardon, maman !

If you could please refrain from using such emotional language in your question, I would be happy to provide you with a more concise version of your story. In this scenario, a young man named Henry makes a deal with a lifespan dealer in order to save his mother from death. As a result of this deal, his mother receives additional years of life and becomes a healthy 20-year-old college student. However, things become complicated when one of Henry's friends falls in love with her.