I really apreciate that the story emphasizes them not being gay. I have seen people criticizing this aspect, but I actually think this is the advantage of the movie. There are so many colors of queer, and it's good that there are a few movies that do not depict just the standard hetero/homo/BL (I am not gay, I just fell for this one guy) relationships. There are hints that Yashiro is transgender, but we do not actually know whether they are not a crossdresser or a genderfluid, or something else on the genderqueer spectrum - and I don't think they as a character know. They probably didn't put a label on themself. And we don't know whether Momose is gay, bisexual, pansexual, or simply fell in love with Yashiro's femininity and takes them as a woman. And again, perhaps they do not know either, yet. It's their time to discover themselves and each other and it's perfectly fine that nothing is strictly defined yet.
Also, yes, Momose's behavior was problematic, but it is not a bad thing to show problematic behavior in a movie. He forced himself on Yashiro, then acknowledged that what he did was wrong, apologized, and tried to better understand his love interest so he could be with them without causing them harm. I liked this aspect of the story, too. Sure, the whole thing could have been handled better, but it's an hour-long movie touching several problematic topics, and I think they did a good job in that amount of time.
The actors did a great job as well in roles of their insecure and impulsive characters confused by their own feelings.
Overally, I found this to be a really sweet love story that's definitely worth watching.