RTA Sousha wa Game Sekai kara Kaerarenai

Our protagonist, the speedrunning emperor of "Anotherverse", suddenly feels sleepy in the middle of practice.When he awakens, the familiar opening of "Anotherverse" is playing right before his eyes!?In this godly environment where the body is moving better than usual, you have to speedrun!Clearing the game world faster than anyone!Abusing bugs to fight, the "fastest" Isekai fantasy!!