Nanase Mai is Yukihiro's younger sister. She is a naive high school student who one day overhears her brother's friend, Nishino Sota, saying "Your sister is cute." They then start a relationship, however, Sota's cousin, Kaga Ituski, also falls in love with Mai.
You usually don't expect too much out of a movie adapted from a shoujo manga. Sure, it will have cheesy romance and innocent and cute moments, overacting with crazy goofs, but still, you have some standards. Standards that this movie doesn't live up to them. Not that the acting was bad. At least, the performances were nice. BUT, the story was so weak and so idiotic, as the big misunderstanding made no sense. Also, the manga references were too fake. Finally, though the romance was cute, it was too weak and had no chemistry involved. So, three out of ten, because of the poor execution.
This movie is one of the most adorable movies I have seen. It has a super strong anime feel to it. It seems pretty cartoony as well because of the sound effects during the character's actions. This movie was very funny and has a lovable cast. It's a little bit over the top but it's supposed to be. There is some drama but this movie is for the most part very light. It doesn't get tragic or dark. Even the jerky characters were likable and really added to the comedy. There wasn't a single character I disliked. Give this movie a watch. It is light, funny, adorable, and romantic. ;)