Level 0 no Munou Tansakusha to Sagesumarete mo Jitsu wa Sekai Saikyou desu: Tansaku Ranking 1-i wa Nazo no Hito

The weakest me, partying with two of the most powerful girls!? After dungeons suddenly appeared on Earth, the concept of levels was inscribed on humanity. Levels were quantified, and as the law of the jungle became more and more prevalent, Level 0 Suzuki Hinata is the most discriminated against person in the world. Even though he's incompetent, he dreams of becoming a dungeon explorer, but for some reason Hinata suddenly becomes close to Kamui Hinata, a beautiful silver-haired girl with S-rank potential whom he meets at the high school he enrolls in?! "Could the identity of the number one explorer be...?"