Toaru Kagaku no Railgun SS - Volume 2, Chapter 6

A martial art expert from the Song dynasty lives like a Phoenix that can live again in another body after death. This time, he happened to take over the body of a Japanese high schooler who is also a victim of bullying and has a bit complicated family circumstances.

Standing before you is the Quicklime Martial Saint, the founder of the Taiyang Fist, the Flower Folding Master of Dinghu, Half-step Master Invincible Under Heaven, the First Sword of Xuanmen, the Judicial God, and Taiyi....After the end of the Dharma, a time of grand corruption descends, the world devoid of spiritual essence, and the system of Dao fruits takes precedence.Embracing Dao fruits, ascending step by step, thereby possessing the power of gods and saints, transcending the ordinary to achieve holiness.'Just like this,' Jiang Li said while summoning a dog, 'Heavenly Dog, bite him.'

This is the story of a boy who lived a secluded life in the mountains, tending his farm, rearing his fish, and dreaming his dreams. Eh? Did I suddenly conquer all worlds and become the big boss? Or am I still in a dream?

- Description from Novelupdates