[Crossover] I'm a Straight-A Student, So Why Are All My Boyfriends Delinquents?

As the title says. Shinhara Haruka has been a top student in her teachers' eyes and a good girl in her parents' eyes since childhood. She's well-behaved and sensible, excels academically, stands out in club activities, and gets along with everyone. But who could have guessed she had a knack for attracting delinquents? Her first boyfriend was a delinquent. Her second boyfriend was a delinquent. Her third boyfriend was also a delinquent. Her fourth boyfriend was still a delinquent. The scariest part is that after breaking up with her, most of these delinquents evolved into Mafia members. As a high school girl who wants a peaceful life, she just wants to have a sweet, ordinary romance. Why is that so hard? Also known as I'm Having Such a Hard Time and My Ex-Boyfriends, Who Used to Be Delinquents, Became High-Ranking Mafia Members. Content warnings: The heroine is different on the inside than she appears on the outside. She's a flirtatious, two-timing type and a hopeless romantic, not a proper top student at all. Note: * The main crossover series are Katekyo Hitman Reborn!, JoJo's Bizarre Adventure, and Bungo Stray Dogs, along with various other anime. * Since this is a crossover world, the settings will definitely be altered. * Mary Sue story, out-of-character scenes and a love-triangle showdown ahead. The male lead hasn't been decided yet; it depends on how the story develops. Theme: Love needs novelty.