My Pet Beast is Super Fearsome - Chapter 657 - 24 Abyss Purgatory

Noah Brown had a gift for fighting. Unfortunately punching things didn't pay the bills, at least until he died and an Eldritch god found his soul. The encounter led him to a new world, summoned by bloody cultists, with nothing but the shirt on his back, and a strange item in his system menu.

[???] : A source of infinite potential.

Perhaps he'd finally get to put his gifts to good use.

Yin Shen’s name is God.

He never thought that one day he would really become a god.

- Description from novelbuddy

While on a plane ride, Shuuta Fenton and his classmates are whisked away to a fantasy world by Holy Lord Meruria. She reveals to them that they are to be her Soul Warriors. Most of the students display extraordinary skills after opening their Soul Crystal, but Shuuta is the only one to not have any potential, being cursed with a 0-Star Soul.After a sham trial to decide whether or not he can be useful to her, in which his own sister argues for his sacrifice, Holy Lord Meruria banishes him to the void, an inescapable realm of unending torment, to recoup the Holy Mana she spent on summoning him.While his body was destroyed, Shuuta's desire for revenge keeps his soul intact long enough to gain the attention of an unknown entity. It alters his essence and turns him into a chimera, something viewed as a blasphemous abomination that grows stronger by consuming others.After his soul is summoned again, and this time by the imprisoned Dark Lord of Tyranny, Shuuta frees her and throws away his former identity to become Lyudmila Springfield, the future Transcendent Dark Lord that will spill the blood of her enemies.