Disguising Myself as a Man to Become a Knight! - Chapter 9

Lin Dong, who has mastered both the divine medical arts and martial arts, has traveled from the mountains to the city.With divine medical arts in his left hand and unbeatable martial arts in his right, he roams freely in the city.

A 30-year-old NEET is reincarnated into the body of an otaku that choked to death on instant noodles. As he comes to grips with his new life, he realizes that this world is subtly different from Earth. The denizens of this world are far better looking, and this new world also possesses futuristic technology as well as mysterious Yin Yang masters!

Leiyin accidentally crossed into the One Piece World, and accidentally obtained the Naruto System.

He was a wealthy and mysterious financial backer who had appeared before her when she needed money the most. After the courtship, she took the money and left.