After Summoning the Trash Boss with a Jujutsu Technique

[Complete. 70% of the text is protected. The full text costs less than ten yuan.] [Bonus chapters still updating!] Ieiri Yuki once ate mermaid flesh and gained immortality. But his mermaid ancestry made him an evil being so terrifying that even yokai feared him. Then one day, he transmigrated into the world of jujutsu, and a live stream of scrolling comments appeared before his eyes. The body that yokai had once feared had an inexplicable attraction to cursed spirits here... Ieiri Yuki: ...In short, I'm catnip, right? Just as he was about to be overwhelmed by a swarm of cursed spirits, he awakened a summoning technique and summoned a Special Grade cursed spirit Humanoid, with black hair and red eyes, cruel and vicious. The King of All Demons. 1. Locked in the technical college's dungeon, Ieiri Yuki watched the comments to pass the time: [It's over. Several waves of cursed spirits have been drawn here by the “catnip.” He can't hold out, can he?] [Cursed spirits everywhere, like cockroaches. Ugh!] Ieiri Yuki: ... Immortal or not, he could do without being buried under cockroaches. Yuki's potential burst forth. Inspired by the talismans on the dungeon wall, he “sealed” himself away. [?!] 2. Yuki had a talent for talismans. With practice, he evolved from a disposable cannon-fodder member of a suicide squad into a support and control specialist. The commenters were amazed: [Sealing talismans are great for restraining cursed spirits!] [You can even seal cursed spirits inside talismans and summon them in battle.] [Some talismans can even be used by non-sorcerers. Just look, he's already sold a whole stack of “good luck charms.” Yuki has a real head for business!] [Could he even make a sun-shielding talisman for the lousy boss?] [If Yuki defected, he'd probably live pretty comfortably.] 3. Some time later: [He defected?!] [Makes sense. The stitched-face cursed spirit even calls Yuki “Father” and Muzan “Mother” now...] [Jūgo's biting his teeth to pieces] [But he still has to serve them] [What can you do? Almost everyone in his faction is a Yuki fan. The Four Calamities, and even “That One”...] [Hmm...] · Little extra: Itadori had a classmate named Ieiri Yuki. Sukuna lived inside Itadori, while one of Yuki's shikigami was named [Muzan]. Since neither Sukuna nor [Muzan] was particularly obedient, Itadori and Yuki quickly formed a deep friendship. Sukuna was unruly and often popped out a mouth to butt in. Yuki: “Sukuna is the one living inside you. You're the master, Itadori. You should discipline him. Look at Muzan. He's been getting a lot more normal lately after I taught him a thing or two.” Itadori: “...” Yuki sounded so sure of himself, but judging by [Muzan]'s expression, that clearly wasn't what had happened! And he'd heard noises coming from Yuki's room in the middle of the night. Had [Muzan] taken advantage of Yuki while he was asleep?! [He did more than that. He used his feet, too...] [He used his hands and feet, all right] [I'm used to it] [So when are you going to show us the details, for the audience's sake?!] Naturally seductive charmer x female ghost number one Regarding “female ghost number one,” here's the explanation given by Baidu AI: [Female ghost number one: Often dark and clingy in nature, she may show extreme love or possessiveness toward a particular character, and can sometimes seem unpredictable and capricious. Her appearance may be both beautiful and fierce, with an eerie, shadowy aura and a haunting beauty that gives people the impression she might do something extreme at any moment.] One last note: 1. This story may be out of character. 2. Timeline: Starting from June 2018. 3. My writing is average, but I'll do my best to tell a good story. Theme: Trust is the most important thing between people