Like the title Green Tea x Death House
Shen Deyue went back to her high school days when she woke up, and then she discovered that her ex-girlfriend was also back with her...
I'm not sure if everyone will like this story. Some people may be offended. It's a very middle-grade story of adolescent pain. If you see something you don't like, just abandon the story. To avoid spoilers, I won't say more.
Purpose: Healing and being healed