Mo Dao: The Reborn Demon Phoenix

Wei Wuxian picked up a jade pendant on the road and, unable to resist making a snarky remark, said, “I wish I could go back to when I first died.” As a result, he became the only god in the world. (Written at an elementary-school level, so please be kind if it's not your cup of tea.)

The characters may be out of character, so please bear with me.

Side couples: Lan Xichen and Jiang Wanyin

Lan Sizhui and Jin Ling

Mo Xuanyu and Mu Yao

Xiao Xingchen and Xue Chengmei