I Become a God in a World of Resentment

Lu Guichen is a genius, but sadly, his parents died young. Fortunately, when he was ten, a mysterious man whom no one else could see adopted him, and his life was more or less all right. Then, on his eighteenth birthday, he received a gift: open a magical box and enter a new world. Here, he can help the owners of resentments escape the past they cannot move on from. As more and more people trapped in resentment come knocking, the mysterious uncle / kindhearted person / Grim Reaper Bo Sang says, "No way! How could a sickly beauty like him handle all that trouble?"

The owners of resentments from all over the world crouch in the corner, drawing circles as they curse Bo Sang: "Lu Guichen was practically born for the world of resentment. How can you keep him all to yourself?"

This is probably a heartwarming story. The blurb and setting still need work.

Gentle, scheming Grim Reaper gong x genius, sickly beauty shou who sometimes turns into a little maniac. Older man/younger man, raising him. The shou was a cross-dressing beauty as a child. Good luck and happy box-opening!

Each box holds the joys and sorrows of a different person.

Theme: Don't walk into a dead end. Life holds many possibilities.