The Legendary Mechanic is the only web novel I've ever read that I considered perfect in every way, there wasn't a single boring moment or filler chapter, there wasn't a single "that part" in the entire story for me and the best part about it was that the actually best girl won.

Any recommendations for anything close to LM? Player reincarnated in the game world as an NPC, and actually interacts with the players while hiding his real identity, uses knowledge of the game to become OP is powerful and intelligent