Early on in “Happyend,” writer/director Neo Sora’s assured first narrative feature following his revelatory documentary about his late father, “Ryuichi Sakamoto: Opus,” we see a group of youths running into the silent streets of Tokyo after police shut down an underground party. Things could have been dire had it not been for two of them creating a distraction so they could all escape, yet they yell out in excitement as they hurl themselves into the darkness of the night before everything stops and they’re all frozen in time.
Accompanied by Lia Ouyang Rusli’s stellar score, the title card gently appears then quickly disappears.