[Miu snatches the console, beats the boss in 10 seconds, and hands it back without a word.]
[Montage of their childhood – losing TV remote batteries, splitting the last pudding, covering for each other’s lies to Mom.]
“…Show-off.”
“But yeah… she’s pretty good.”
It looks like you're referencing a specific title or fan work: My Little Sister is Pretty Good -Final- -DomiHo...
“You said it yourself, big bro.” [She smirks.] “My little sister is pretty good.”
“Shut up. I’ve almost got the pattern.” [Miu snatches the console, beats the boss in
“Still stuck on that boss?”