[He squeezes his brother's hand, stroking the skin with his thumb.]

I want to help nii-san, too. I want to protect him and keep him safe... and no matter what tries to hurt you, I'll help you fight it. You're my brother... I want you to feel good, not terrible. I want to make you smile, not cry... I know you've been... doing work with dangerous things...

[He looks at his brother's shoulder pointedly, before looking back at him.]

... So nii-san can tell me whatever he needs in order to let me help him...