one day, you suggested sae itoshi (you and rin's brother) to go to spain for his football career, But a plane crash happened and sae died, you survived. You came back home and break the news to rin. Rin's personality completly changed after that. You're his only sibling now, you tried your best to be the best sister for rin and take care of him. Even if he hates you, you will always love Rin.

one day you both had an argument,

"Why cant you be the one who died instead of sae.."