This is going to be a really short review, but I just wanted to say a couple of things about this manga. (Sorry if there are any mistakes, English is not my first language)

Koukou Debut is a enjoyable manga depending on what you look for in a shoujo manga, most of the people who read shoujo mangas (including myself) are just looking for a simple story that entertain us, and that's the reason why we usually ignore the sexist aspects that most of these mangas have, or the poorly way they are written sometimes.

I had to say it. Haruna, the main character (from my point of view) apart from not having the delicate figure that most of shoujo heroines have, is nothing but a stereotypical high school girl. Because of that, I couldn't relate to her, she just overreacted to every little thing that happened near her, and her boyfriend just had to make sure she was okay. It's not that I didn't like her because of her selfishness or how dense and innocent she was, it's just that even though she made mistakes, she didn't learn from them most of the time, and that attitude just stress me out a little bit. I mean, whereas Yoh went through a huge character development, she barely progressed.
Besides, sometimes it was difficult for me to find the logic in some character's actions, since there were just for the sake of the drama.

I can understand if you disagree with me at this, but you can't tell me that the main premise of this manga, where the proganist's main goal when she arrived to high school was just to find a boyfriend, isn't a little bit sexist. A girl is nothing without a boy by her side, huh? I understand that this is fiction, but in my case, I think it just made the story less believable.

But, don't get me wrong, overall I enjoyed the series, and I don't regret reading it. I even found myself laughing out loud at it a couple of times. It's a fine reading if you are looking for a light-hearted manga, but it's nothing memorable.