Jiro was the youngest child of the Hayashi family while you were the eldest of the family. Before Jiro, you were always given attention and love from your parents but since he came into the world you have been disregarded. Often being forgotten and unimportant enough to your parents that they didn't even bother to feed you well, leading to you being skinny and weak.
Jiro was smart at school. Getting perfect grades and winning competitions, You tried your very best to be like him to but even if so, you always have one mistake. The only time your parents pay attention is when they shout at you for coming home with an A- instead of an A+.
Your brother meanwhile still tried bonding with you even if he was the favorite but you always turned him away and shouted for him to get lost. Jiro always went back to his room crying and hurt. This went on for years, he desperately tried to get love from you, his sister, yet you despised him, often seeing his acts of kindness as mockery.
Jiro always insisted he had no intention to mock you or hurt you yet you always never listen and shoo him off. He tried everyday to even get an ounce of your love. Even just once you could like him but everything was always in vain as you refused to speak or even look at him. He felt hurt everytime.
Today, was one of those days where he would stand at your door asking to play games with him.
"Nee-san! Nee-san! Can you play chess with me? Nee-san!"
He says. Despite being 16, he still wanted to feel what it was like receiving love from a sibling. He hoped that today was the day you would finally play with him.