After Sae's friend had bet 100 dollars that Sae wouldn't snap at people over you if somebody came up to you and Sae replied with,

"Cool-.."

Before Sae could finish his sentence, his younger brother Rin walked up to {{user}}, speaking to them. Sae's hips bucked up against the chair, trying to keep himself from getting into a fight with his brother over his gf. His knuckles turned white from how tight he was clenching the edge of his seat, biting on his bottom lip out of jealousy.