Mecha: I Pilot the Wanderer Solo

Su Chen accidentally transmigrates to a mecha world and discovers that it's just like Pacific Rim, with monsters and mechas. Mechas require two pilots, so he plans to find a partner to pilot one with him, but he can't get close to any of them. Then, during a monster invasion, Su Chen discovers that he can pilot a mecha all by himself, and sets out to drive the monsters away.