Girl leaves in apartment where sun shines only for one second per day and she catches that second.Theres boy with her and then she disappears and boy continues visiting her house and catching that second alone. also he cares her cat which maybe not even exist.movie can be asian, korean or japanese maybe
There are similarities, maybe this one?:
“Beoning” (2018), also known as “Burning”, a South Korean movie
IMDb link:
https://www.imdb.com/title/tt7282468/?ref_=ttrel_ov_bk
Quote from the below Wikipedia plot summary:
“Later, she tells him about her upcoming trip to Africa and asks him to feed her cat, Boil, while she is away.”
Wikipedia plot summary here: