Rent a girlfriend, the title says it all but I'll actually explain.
Our main character is known as a simp. Or if you are reading this when that word is no longer a thing, Somebody/Sucka who Idolizes Mediocre Pussy.
He is a desperate virgin obsessed his ex-girlfriend. A girl he only seems to really like because she is attractive. At least he never says much about her personality when talking about her.
After she breaks up with him for very good reasons, he goes online and pays a girl to date him.
A girl would goes to school with him...and lives next to him...and their families know each other...
All you need to know is that plot will always find a way to bring them together. Also because he is a compulsive liar, he constantly makes the situation worse for both of them. Which apart for it affecting the girl's time and social life, works for her because he pays a lot.
Obviously, it is popular to hate him in the community. But the waifu wars are strong.
And to be a lot more spoilery. His ex keeps him on a leash. Why date him when he will probably stick around any way. That and the plot drags them together anyway. And we still have more girls to add to this weird harem thing that isnt really a harem.
Of course this show is very popular this season and if you are here later you should very much still watch it. Love it or hate it you are gonna wanna finish it. It is just one of those shows.