Place this clip as the reply beat in a dialogue edit, after the whining line and before your reaction shot. Follow it with an awkward crickets sound for everyone else's stunned reaction, or end the edit there and let the argument stop cold.
このサウンドについて
A 10-second Portuguese voice clip of Ikki losing his temper and swearing at Shun, calling his younger brother irritating. It feels exasperated and confrontational, like an older sibling finally snapping after too much complaining. Ikki and Shun are the Phoenix and Andromeda Knights from Saint Seiya.