Chronicles of Late Splendor

Tragic, powerful male lead x seemingly meek little white rabbit A half-immortal girl with little magical power, determined to save her mother, meets a dark, calculating demon king who has slaughtered countless people. The demon king was rejected by his mother from childhood and even thrown into a pit of poisonous scorpions. While in the icy realm searching for medicine, he happens to meet a girl who is also trying to save her mother. One has a deep-seated hatred of his mother; the other would do anything for hers. Unfortunately, the only way to get the medicine is to rely on the demon king. The demon king flies into a rage every so often, and the girl gradually learns to pretend to submit and play nice.