NinNinDays2 (2021)

A young man is dazing off while working the night shift at a convenience store, when a girl stops in to ask for a meat bun.The one next to her appears to be her boyfriend, and after doing their shopping, the two of them link arms affectionately and take off.
Just when the young man is thinking how nice it would be to have a girlfriend, a pair of girls in ninja cosplay show up.

The girls just stare at the shop goods without buying anything in particular.
Even worse, they're even chatting about ninja techniques or something along those lines.
When he calls out to them to prevent theft, it becomes apparent that they have no money.

Despite suspecting that they might try to steal something, he gives in and buys a bento for the two desperately pleading girls.

The life of that young man is turned upside down from the moment of his encounter with the two young women.