After Becoming Young Master Gu's Private Tutor Thanks to My Beauty

One-sentence premise: By day, he's a tutor; by night, he's a wife. This half-vampire professor, refined and gentle on the surface, successfully uses his good looks to seduce a puppy-like young man~~ Lan Jiuqing has always hated spoiled rich kids who are good for nothing, only know how to race cars and party, and can't do a thing. But after his family falls on hard times, he's forced to become the study companion and tutor of the spoiled young master Gu Chili Before they meet: I'll put up with it for the sake of paying off my debts. After they meet: I can't stand it. I want to beat that brat to death for not listening. A few days later: The rumors were wrong. He's not completely hopeless. A month later: Teaching you is the greatest blessing of my life. Six months later: It's okay. Even if you have nothing, you'll still have me. Gu Chili hates schoolteachers who constantly harp on rules, can't drink or dance, and have no sense of fun. But his father just had to hire a bookworm to be his study companion. Before they meet: Get lost. After they meet: Not bad-looking. I guess I'll let him stay. A few days later: Fine, I'll quit smoking, okay? Just don't leave! Six months later: Lan Jiuqing, my family kicked me out. Can I stay with you? Present life: A half-vampire professor, outwardly elegant and composed but secretly a calculating, seductive bottom, vs. a spoiled young master top who's obsessive and wildly possessive. Past life: A seemingly aloof immortal-sect master who was madly in love, vs. a young emperor who was wild and carefree but loved only his master. Reading guide: 1. Younger top, with an eight-year age gap between top and bottom. 2. Past and present lives. Later on, neither top nor bottom is an ordinary person (maybe fantasy? Can't help it, the author loves cats). 3. Both are pure, the utterly innocent kind. P.S. You ask if it's angsty? Hilarious. There's no way this author could make it angsty.