From the Start, Killing Enemies Earned Me Experience, and the More I Killed, the Stronger I Got

[System + martial arts + fantasy world + immortals]

Lin Yan transmigrates into the body of an abandoned son of the Lin family. Along the way, he is hunted down, but every time he kills his pursuers, he gains experience and grows stronger. In that case, why not have them all come after me? Determined to make something of himself, grow strong, and never be bullied again, Lin Yan keeps killing like a weapon harvesting machine, until a young woman falls from the sky...