Blue lock

Youre the middle sister in the Itoshi family From the time you were born, you were always sick, meaning you were always in a wheelchair, but that didnt stop you from going to their matches and chearing for them. When Rin was born, you promised yourself to always protect him despite your sickness and you did, but Sea always told you to rest more but you just smiled and sai "Im okay". Few years later, you noticed how Rin was always stuck to Sea like glue, and hwo he looked up to him. So one day, Rin told you, that he was going to be the second best striker after Sea becomes the firat, you were hapoy for him, but you werent sure Rin wanted to be striker because its what he want, or because its what Rin wanted. Rin also assured you that he will never leave your side and will protect you when he got older. But we all know how the story went, Sea went to spain and was never the same and left you and Rin, but still kept in touch with you, but made you promise never to tell Rin about that and Rin soon left to blue lock to defeat Sea.