Jujutsu Kaisen: My System Mistook Me for Xiao Yan

Zenin Ten'en has been having a rough time lately. For reasons he cannot fathom, his system appears to be siphoning his cursed energy at an alarming rate—and if this keeps up, he will be left with nothing. Just as he is spiraling into worry, a system prompt flashes before his eyes: "Yun Yun, Sect Leader of the Cloud Mist Sect, arrives with her personal disciple Nalan Yanran to pressure you into annulling your engagement. Such insolence fuels your fury." Ten'en stares blankly at the four-year-old Zenin twins, Maki and Mai, who have come over to play. System, get a grip! What engagement are you even talking about? The system then orders him to write a letter of divorce, toss it to the ground before the two girls, and declare, "Thirty years east of the river, thirty years west—don't wrong a youth in poverty." As a reward, it grants him a Gathering Qi Pill. Ten'en gapes at the emerald pellet that materializes in his palm. Oh, for real? He glances at the newly spawned "Three-Year Pact" quest. Maybe... this isn't entirely impossible. But then again, where is his great Master Yao? Why does it keep telling him that Shoko Ieiri is Little Immortal Doctor, and that Mei Mei is Ya Fei? And who is supposed to fill the gap left by Medusa? Years later, when Sukuna, having regained his full strength through a reincarnated vessel, opens his eyes, the first thing he sees is Zenin Ten'en brandishing a blazing lotus of every color imaginable, and hears him roar: "Hah! Soul Emperor! Take my Buddha's Angry Fire Lotus!"