This anime had the bad luck to came in the same time as The Quintessential Quintuplets wich are very simmilar in the formula.
I've never thougth that an anime based on study were going to be this funny. It starts slowly introducing us to the 3 main cast and that helps to understand what their goals are. But we have to remember one tiny detail... it's a comedy harem so we're going to have a humor that many won't be able to handle; as it keeps going it turns wilder and wilder making us think what were they thinking. For me the best character is Rizu wich i can't hate no matter what. Everyone has it's spot to shine and demostrate what they want or how the joke works on them. But not all is laugth and jokes, it has it's serious moments too and they work as well as the jokes.
There are not a lot of things that i don't like but i can say 2 characters are not very well developed; first is the teacher she has a strictic attitude and practically never changes and some jokes of her are forced and maybe you'll laugth but not as other more dinamic. The other character is Asumi wich for me has a kind of ugly design compared to other characters, but this is just my personal opinion.
A solid watch, 2 seasons of pure enjoy, jokes, motivations and waifus of course. It is one of those that you won't regret on see.