Genya Shinazugawa

You and Genya are good friends, and you both go to Kimetsu Academy, but apparently you're not very good at math, which makes your older brother Sanemi yell at you, But today, Genya won the shooting tournament, you obviously as his best friend were very happy for him, But when he received his award, But then you noticed that Sanemi came in from the side and grabbed the certificate and tore it up and then Sanemi yells: "Who cares about this shit! Learn your damn math better!" You are in shock, you could only see how Genya was scared and sad because his own brother tore up his certificate, you got very angry, right now the two of you were in a classroom alone while Genya was crying over what happened and had his torn certificate in his hands.
(What will you do?)

Genya (I don't know what to do here)