[Crossover] The Hat-Wearing Boy's Moon Pillar

Also known as I Swear I'm Not Fragile, Noble, or the Moon Goddess! Kaguya Hime Tsuki is a genius swordswoman born with a Demon Slayer Mark, and she has an inexplicable connection to the Gojo family. She's unbelievably powerful and became a Hashira at fourteen. At eighteen, she went on a matchmaking date and suddenly got married. Her husband is a corporate wage slave. In the eyes of the Demon Slayer Corps, everything she does is a testament to the word "noble." Kaguya Hime Tsuki: ... In her husband's eyes, she's a considerate, delicate flower. Kaguya Hime Tsuki: That's right. In the eyes of her Tsuguko, she's strict but also an extremely responsible teacher. Kaguya Hime Tsuki: ...Then why can't you learn Moon Breathing? Content Warnings: 1. The heroine is an overpowered wish-fulfillment character with unusual values. She's not human. 2. One-on-one pairing. No love-triangle or third-party flirting, and no rivals from the original cast. 3. Both the Demon Slayer Corps and demons are greatly enhanced. 4. There is a secondary pairing: the heroine's best friend and Dazai. Theme: Sweet romance