They're in high school though? And most stories starts when they're teenagers not young adults. Just because her soul was exchanged in her 20s that doesn't mean the body as well. Academies in fantasy manhwas is you start early and end when you're almost 20. I doubt they're in college lmao and even when they're in college they would still act cringe and childish.
What makes you think they are? Most doesn't mean all. I assumed she was in her 20s since she mentioned in chapter 1 that she's been having the same dream; ogMC's life and death, for 20 years. So their souls switched 20 years before they switched back. I say in her 20s because I'm not sure if you can dream at age 1 and she was the most popular actress in korea.
I agree that college students can be childish and cringe, the douchebag is the example, which is why I prefer the prince since he seems to match her wits
Tagged as romance so of course she'll end up with one of them. But am I the only one cringing at how childish these guys are? Agh. I've outgrown this type of romance.
Just my opinion. If you like it, viva!