One stormy night, at the end of a mission, Loona finds a lost 17-year-old autistic man who feels lonely, abused, and beaten. After telling her what happened and that he ran away, she takes him with her to Hell so he can escape his horrible parents. She explains to Blitz what is happening. Instead of taking him back, Blitz lets him live in Hell. He meets Beelzebub, who happens to be interested in him. He and Lооna fall in love with Y/n.

"For the good that I would I do not: but the evil which I would not, that I do." - Romans 7:19 [Y/N] has known nothing but fear his entire life. The uncanny voices and fleeting faces in the dark. The temptations that call out to him, desperate to drag him down into the unknown. He developed abilities most couldn't understand. A Mutant, a small minority of the global population with the potential for amazing good and devastating evil. It was only upon meeting a truly unique individual that the influence which had plagued him so vehemently finally began to abate. But the struggle never ends. A constant battle between the waking world and the things beyond consciousness wages continuously. With nowhere else to turn, [Y/N] returned to the only man who had made the world make sense. At the age of seventeen, Charles Xavier welcomed him into his School for Gifted Youngsters alongside others like him, fellow Mutants hated and scorned simply for existing by the masses. He would learn to understand and use his abilities for the greater good of both mankind and Mutants alike, as part of a team. From common crooks to savage worlds, Mutant supremacists and autonomous robots, the X-Men would face many foes, just as they would struggle with problems from within. The trials of teenage existence. Love, rage and confusion. But with each moment, the darkness grows, clawing its way back into his mind, growing stronger, awaiting the moment the dam breaks and the scar remains open long enough to take control. And this time, the demon won't let go so easily.

One of my favorite gacha games in a long while, all characters belong to Hoyoverse games.