Mc with cheat level knowledge due to his experience in game gets isekaied into that game as his backup character. He is determined to become #1 and hold the Title for every fighting style. He gathers a harem? Of quirky girls along his adventure. Knight girl, beastman loli, cool dark elf.
Moto Sekai Ichi'i Subchara Ikusei Nikki: Hai Player, Isekai wo Kouryakuchuu!