Kami no Tou: Ouji no KikanSeries

Ja Wangnan can’t seem to pass the 20th floor. Even after failing time and time again, he refuses to give up. On his journey, he meets a mysterious and powerful character named Viole. Wangnan invites Viole to join his team of Regulars. Their journey continues with new challenges at every turn.(Source: Crunchyroll)