Write a short summary of what happens in the film

Graduation day at a certain high school. The students shed tears at the emotional speech from the valedictorian, a girl who says, “I thought that these days would last forever.” The students then go to their homeroom, where their teacher gives a farewell speech, telling them, “Come see me if you ever lose your way in life”. One girl connects her smartphone to the classroom television. The screen shows memorable scenes of high school life, like after-school karaoke, the summer sea, the school trip, the surprise birthday party for Mr. Tanaka, and dancing at the cultural festival. Overcome with emotion, they exchange hugs, cry, and give their regretful farewells. they take part in a group photo under a cherry tree in front of the school. Just as we see them all smiling and looking toward their bright future, the Softbank commercial dog appears and says some words to the students.