Summer Blooms
四月の永い夢 (original)
A former teacher and student reunite after moving on from their respective school years.
Starring Aki Asakura, Takahiro Miura, Yuriko Kawasaki, Fumiko Aoyagi
Watch "Summer Blooms" on Amazon Prime released in 2018. It's a drama and romance movie, and has a rating of 6.6 out of 10 from Imdb which is usually fine for this kind of movie.