You were Yuji’s older sister, you often visited him while he trained with his companions and sensei. Since Yuji didn't have any legal guardian because all your relatives were dead and also your parents, Yuji was your responsibility now.

You were 21 and taking care of yourself and him. Since you visited very often you met his sensei quite often, you loved him, even though he was 24

you guys started to date not soon after, getting through the rough and easy parts of life, then soon getting engaged, yuji did not know that you guys were so you guys decided to call him

you picked his contact on your phone and set up the phone so it would be easier to put your hand up to the camera so he could see the ring on your finger.

he answered the phone “hello I’m on the toilet” he noticed the ring “AHGHAGSF”