Hi everyone, I'm looking for series with any of the following themes, hopefully all of them

1) The girl pursues the hero. She's into him and aggressive about it. It's not something she usually even does (for example, if she's high-status or super goodlooking). She might even pursue him in a downright lascivious way. I don't mind if it's scary (like the crazy-ass pursuit of Yuki in the Diary series) but I prefer it if the series is romantic, sexy and non-harem. That is, I want the pursuit to be a significant plot point. One example of what I'm looking for is from "Change Guy," where Yena, the smokin' hot badass karate chick who could only ever be with a man stronger than her, decides she's into Kang-Too Jee because he's that much of a beast in a fight.

2) Series where the girl goes after the guy and the guy is either naive or not at all used to women that he doesn't really pick up on it. (This happens to Kang-Too Jee in "Change Guy," interestingly enough). The guy may not actually realize how attractive he is.

3) Series where the guy undergoes a massive upgrade in attractiveness, either through the result of a body swap or magical change or some other kind or some other kind of metamorphosis. From dud to stud, chunk to hunk, whatever your preferred snappy analogy is. Essentially, the unattractive person joins the beautiful people. This results in a massive social upgrade.

4) Bonus points if the situation in 3 includes a girl who wasn't just indifferent to him but actually didn't like him, was actively cruel to him, before but now that he's hot, likable, confident, softens on him. She may or may not realize his identity.

Ideally a story would have all of these features. However I'll settle for just one.

Series that might match these descriptions that I've already read:
-------------------
Karekano
Karin-to
Change Guy
Future Diary

Thank you for your help!

The ones that popped into my head for 1 and 2 combined are:
Kade taifuu
sumomomo Momomo

For number three I thought of these ones:
Aphorism
Merupuri

For number 3, Cyboy maybe?

I also discovered "Duck Prince."

Seconding Cyboy