One look at the manga cover and you'll instantly know this is going to be a romantic comedy harem story.
You're probably right....eventually.
However, having read till chapter 7, this is not your typical generic romcom; the romance isn't rushed like most generic romcoms, which is a good thing, and the obligatory 'love rivals' doesn't come crashing in within just a few chapters early on.
More importantly, the premise is pretty original as far as I know; handsome, totally popular, cool-looking main character dude who's also smart and good at sports. Formerly chubby as a kid, he strove to change his image just so he could get revenge on a girl who humiliated him years ago. The MC for this romcom has a purpose right from the very beginning, and it's in a form of exacting revenge towards the main heroine; something that's uncommon for romcoms.
His quest for revenge, though, is not as bad as it sounds; he's quite the good person, and the heroine seems to simply have a very, very bad case of Tsundere (which has caused a lot of trouble to others, more than she realized), so it's still unknown if she's truly that bad (you can probably see where this is going...)
An interesting thing about the main character is that he's not used to being so handsome and so popular; he is constantly surprised every time his good looks yield positive results - which is pretty funny to see. In other words, he's a newbie bishie lol.
MORE PLEASE.
(Btw, I'm not the only one who thinks Tiv's art look a lot like CUTEG's art, right? sometimes they even look like Non's or K-On's..)