Such an ordinary script. There is not much you are looking for. I watched it to practice my Japanese though.
First of all, the lead male has such an exaggerated acting. While he is trying to look cool, he looks childish, rather than charismatic. It is so exaggerated that I cannot believe how nobody tells them to act a bit natural. I do not see any chemistry between the lead couple. If they were brothers and sisters, that would make more sense. Also, sometimes some scenes are cut so abruptly that you think it is not professional enough. Japanese can do better than that. It's so amateurish. I also had a hard time in feeling the feelings of lead actor and actress when they get upset or jealous, they were not believable enough. When the lead lady cried as she eavesdropped her rival's love confession, I simple said "stupid" rather than feeling sorry for her. Overall, I find almost everything in the movie childish. It could have been better if it were a manga maybe.