A Guide for Background Characters to Survive in a Manga - Chapter 57

What got summoned was the world’s strongest sociopath.

An Alpha arrives at a packhouse party one night only to find out that his mate is the Beta's abused daughter. Knowing that she is abused, he takes her away from there immediately. Her mother died when she was young and took a lot of secrets to the grave with her. She starts finding out that she's not a typical werewolf and she needs to find her way around and navigate through these waters while trying to be a Luna and a leader, which is uncommon territory for her when she has been abused her entire life. But will her mate reject her after knowing how damaged she really is, or will he help of her find that happy ending that she's always been looking for.

As a promise, he went out into the world as an assassin. 3 years later, after becoming the Supreme Assassin, he gave up on everything he had and returned to the ranks of ordinary people. But one day, Kismet, a mystical game created by the National Research and Development had appeared.

Enigmatic hands, spectral frame, and one cunning strike just like the swing of the Grim Reaper. The Supreme Assassin takes on the mystical world, and how his legendary tales sets off, progressively ascending the altar to becoming the best.

- Description from Novelupdates

Is it wrong to face the perils of Dungeon alone, in a single-member guild blessed by a failed goddess? Maybe.

Is it wrong to dream of playing hero to hapless maidens in Dungeon? Maybe not. After one misguided adventure, Bell quickly discovers that anything can happen in the labyrinth-even chance encounters with beautiful women.

Only problem? He’s the one who winds up the damsel in distress!