Thedude3445’s review published on Letterboxd:
I don't know what kind of awful boring life I was living last time I watched this and rated it only 3.5 stars, but Kase-san is just so wonderful and cute and pleasant. There's almost no conflict the entire film except minor misunderstandings and ill-communicated feelings. Nothing huge ever happens, just two teens figuring out how to love each other. And me figuring out how to love the movie, of course.