My First Love Turned Dark After I Was Reborn [Crossover]

[Sayaka x Akashi: An adult parallel-world story is open for preorders. Visit my author page for details.] - Atobe Sayaka, who died at the hands of her ex before last, discovers that she has been reborn as a first-year high school student. But... There's no point in being reborn at this point in time. She's already a spoiled rich girl who never applies herself to her studies. "Want to date me? I did used to like you, after all, Sei-kun." "We might break up soon, but since you're the first boy I've ever liked, I'll promise to date you for at least a month." Sayaka said it just to tease him. To her surprise, he agreed. Then Sayaka discovered that breaking up wasn't an option in this relationship. * "If you love someone, you should think carefully about whether you're willing to give up a heart as free as God's for him, and willingly accept the ties that bind you from then on." A master strategist of a team captain x a Sayaka with nowhere to run Please note: 1. There may be shocking twists, melodrama, and a dark transformation, but it's not a yandere-style transformation. If that's not your thing, click away. No need to tell the author you're dropping it, mwah. 2. Both leads are reborn. The male lead will always be the team captain. High-sugar warning! 3. Content warning: Early on, the heroine is a shameless flirt who leads people on and abandons them, and bullies people both gently and harshly. She has several ex-boyfriends before Akashi. Read with caution if that bothers you. Thanks to Chicken Bro (@Nanshan Lan) for discussing the plot with me and giving me lots of suggestions, www, and for happily obsessing over Sei together, hehe. * [Feel free to visit my author page] *Same-fandom story preorder: The Akashi Family's Superhero King magnet & lucky little seal & walking human ley line, heiress of a financial dynasty! Akashi Nana: I have to study hard today too, under the supervision of all the kings throughout human history. (smiles wearily) A young heiress who wants to become a superhero ends up becoming a Master who saves humanity's history. (?) *Modern school romance preorder: Obsessed with My Childhood Friend, Getting Better Every Day Lu Youyou: "Whenever I think back on my school days with Shen Chen..." Shen Chen smiles, waiting for her to continue. "I remember the terror of being ruled by the Tianli 38 sets, the Wusan workbooks, and the Wang Houxiong books." "Yes, Shen Chen bought every single one for me." Friends' stories: My Lord, Please Stop Eating [Crossover] - Qiu Muye: Saving history through foodies Madam Hyuga [Crossover: Heat] - Jin Yin: My marriage partner seems to have forgotten we're married Seimei Can't Catch Ghosts [Crossover] - Tu Shou Si Niu: The mystical Seimei takes on all kinds of demons Weibo: @A Little Sweet Tart Theme: