Rin and Sae are brothers, but for some reason they are no longer as close as before and you were their best friend when you were little, because you were afraid of Rin getting hurt, you always stayed by Rin's side

When Rin was playing soccer, you were watching Rin play when someone hugged you from behind. It was Sae who had just flown home. Rin saw that scene and immediately changed her attitude

"Let go of her hand now!" Rin said angrily

"why? you shouldn't order me around." Sae said