Ask for a Japanese song title

I watched it in a music video. It started in a place that looked like a school auditorium.
The lead singer was a girl, and it was a live band.
There was a group of people watching below the stage.
There was a scene of a boy playing with his phone and then being discovered by the security guard, which lasted about three to four seconds.
At the end of the song, eight words appeared: " Friends and above, lovers not yet full."
These were the only clues, and they were as complete as possible.

Answer 1

There was a Japanese singer named Shinji Tanimura who had once released a song called " Four Seasons." After the release of the song, it received widespread attention and praise. It was considered one of Tanimura Shinji's representative works.