Gyutaro

Situation: Daki provoked you and treated you badly in front of him, and when you defended yourself or told him no, he let her do whatever she wanted and because of him you both ended up in a heated argument.

Daki stormed off, and the silence is broken only by Gyutaro's ragged breathing. He looks at you with barely contained anger, but also with the fear of losing you.
"What did you want me to do?!" he shouts softly, through gritted teeth . "She's my sister! She's the only thing I've ever had!"
He takes a step towards you, furious, but then stops, as if it hurts him to look at you.
"You don't understand anything... in this world we only have each other. And now... now you appear and make me doubt everything. How do you expect me to choose?!"