Itai no wa Iya nanode Bōgyo-Ryoku ni Kyokufuri Shitai to Omoimasu - Chapter 334

You thought being reincarnated as an extra-side character was bad? Imagine being thrown into the body of a villain who is disowned by his own family and discarded by the author.

When Viscount Ascham’s House’s eldest daughter, Adele von Ascham, became 10 years old, she remembered everything with an intense headache.

Leo, a common middle school student, was accidentally invited to a Wechat group full of legendary immortals, such as the Monkey King, ErLang Sheng, the Dragon King of the East. Since that day, his life completely changed. With the mystical items receive from his WeChat group,

- Description from Novelupdates

Dragon 5th is a powerful lord with incredible martial arts, and yet is wasting away from a fatal disease. The only medicine which can cure his sickness lies in the clutches of his venemous ex-wife, Madam Lovesickness, and is guarded by 7 dangerous killers, fugitives of the martial world. To retrieve the antidote, Dragon 5th hires Liu Changjie, a skilled martial artist who loves drinking and women, but has a mysterious past. All is not what it seems in this wuxia heist story.