As soon as Lin Yu opened his eyes, he became the least favored airborne teacher in Konoha. He was also forced into the seventh class by the system, replacing Kakashi's position. On the surface, he is a poor, lazy and lethargic useless teacher; secretly, he relies on the "secret cheating system" to modify Naruto, Sasuke and Sakura's meridians bit by bit, feed adapters, stabilize the wheel eye, fuse senjutsu and Hashirama cells, and disguise all cheating as talent, epiphany and destiny preference.
Keep up the good work!