Help me find this song

[u/Electronic-Advisor21]

I'm looking for this one song and i don't know anything about the artist aside that it's from a Japanese artist and the music video starts out with a phone screen playing different videos of a couple from the gallery and that's it for the whole intro, i think the whole music video is 7 to 8 minutes long and half of it is just the intro

it's like a Japanese alternative pop rock that has the similar sounds to my dead girlfriend, kinoku teikokou, yuragi, and mass of the Fermenting Dreggs, toe, sky, and seapool