Special-Grade Cursed Spirit Tomie [Crossover]

[Blurb] The year he graduated from middle school, Suguru Geto captured the first Special Grade cursed spirit of his life: the Special Grade Imaginary Cursed Spirit Tomie Kawakami. A human-shaped cursed spirit with intelligence, capable of communication, and a truly awful personality. She is flirtatious, vain, and arrogant, and sees men as fools she can order around at her feet. But she is Special Grade. Do not look directly at her. Do not listen to what she says, or else... "Fall in love with me." She touches the beauty mark beneath her eye and says this, and countless people will rush forward, offering up love as twisted as a curse. - As her nominal owner, Suguru Geto has no choice but to obey the cursed spirit and search for her other souls. The Special Grade Imaginary Cursed Spirit Sadako, the Special Grade Vengeful Cursed Spirit Kayako, the Special Grade Cursed Corpse Annabelle, the Special Grade Cursed Painting of the Nun... Suguru Geto travels through time and gathers her souls. From then on, they are of one mind and one body, inseparable. His and her Domain Expansion: Threefold Sea of Karma, Boundless Hell. All living beings suffer. Would you like to take a trip to hell? [Notes] 1. Suguru Geto is a hardworking genius, especially in contrast to Satoru Gojo. It felt like he had it a little too rough: he only wanted one Special Grade cursed spirit, Rika, and ended up dying horribly. I refuse to accept that, so I'm going to stuff him full of Special Grade cursed spirits. 2. Suguru Geto's power will go way up, and he'll get a Domain Expansion. He might even end up in other high-powered worlds. 3. The heroine suffers soul-splitting like Voldemort. The first time she opens her eyes, she's already the Special Grade cursed spirit Tomie, so her personality will lean toward Tomie's. Unless something unexpected happens, she's a villain. 4. The extremely powerful Suguru Geto might take the route of a cult leader, or perhaps some kind of bizarre Buddha. So he won't slaughter too many ordinary people. They're all ants, after all, no need to take them seriously. 5. The premise is tentative and may still change. Note 4 above could be overturned at any time. Theme: Even a hardworking genius can become the strongest with a little good fortune.