I Turned Dark After Saving the World in a Jujutsu RPG

The good news: Asamiya Rin has transmigrated. The bad news: He has arrived with a level-zero starter account in the very Jujutsu RPG where he completed every achievement before faking his death and quitting. The worse news: ...He landed right in the middle of a battle with a [Main Story NPC], and his first-year underclassmen already look like they're about to die of fright. A few years have passed, and the jujutsu world has changed completely. The rebellious white-haired boy is now the strongest, the frivolous young master has become head of the Zenin family, and the two sisters have become jujutsu sorcerers. Everything seems to be going well... Except for all those trembling hands reaching out, desperate to hold his. "Have we met somewhere before?" they ask urgently. "You look so much like..." What are they babbling about? Even copying it into Pinduoduo gets no results. This is a brand-new starter account from O Treasure, priced at just 9.9! Shouldn't this be a parallel world? Asamiya Rin thinks, expressionless. * Before long, news that the Special Grade sorcerer known as [Zenin Masarin], [the originally designated next principal of Jujutsu High], and [a legendary enforcer of the jujutsu world] may have come back to life shakes the jujutsu world. He died a heroic death at just twenty years old, becoming a thorn lodged deep in everyone's heart. No remains, cause of death unknown, killer unknown. All that remained was a broken blade and an empty tomb bearing his clothes and ceremonial items. Rin, who has completely forgotten the game's plot, takes it all in stride: The people he knew back then have all become big shots anyway. He'll latch onto them, lie flat, and let them carry him to victory! Players, let's all work together. If we win, we get a share of the credit. If we lose, it has nothing to do with us! (Peach O Black.jpg) But... Why does the story seem to be taking such a strange turn? Chains in a lightless prison, former classmates turned into cursed spirits, eyes filled with hidden desire... Asamiya Rin is so freaked out that he spends the whole night digging through the script, finally finding the death record for his previous account buried in tens of thousands of lines of programmer data. Asamiya Rin: ... "This is the world's way of atoning to you." The next moment, the System chimes: Excessively high corruption value detected in the world's perception of the player's identity. Resetting character settings! [Player: Zenin Masarin Cursed Technique: Water Flow Manipulation (Special Grade) Faction: Curse User Support Teammate: Ryomen Sukuna] Asamiya Rin: "...Pfft!" What the hell, wait, what?! ...This garbage game is about to be done for. He needs to start over! Is it still in time to restart?! Reader's Guide: 1. Mainly Jujutsu. This is basically The Legend of Sword and Fairy: Jujutsu, so expect that kind of vibe. 2. 24K pure OOC, a harem magnet and a total Mary Sue. Connect the character relationships into a web and it could circle Jujutsu High three times. 3. Mountains of personal headcanons. Theme: The convictions you hold dear exist for you.