“But yeah… she’s pretty good.”
“You said it yourself, big bro.” [She smirks.] “My little sister is pretty good.”
“She’s annoying. Loud. Eats my snacks.”
[Black screen, white text:]
It looks like you're referencing a specific title or fan work:
[Montage of their childhood – losing TV remote batteries, splitting the last pudding, covering for each other’s lies to Mom.]
[A living room at sunset. The older brother, Kaito, sits on the couch, staring at a handheld game console. His little sister, Miu, flops down next to him.]
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