[Action] *pets* [Agito notices but doesn't catch Tsuna's gaze. He doesn't need gratitude. This is what he was created to do, help Akito. It's what he wants to do. The light is too important to let him fall into despair.
The rubbing helps, and slowly Akito calms, shoulders slowly stopping their shaking from the sobs. It hurts...but he has to calm down. The pain will pass, right? He just has to accept it...
After a little while, he manages to murmur softly] I'm sorry.... [He's such a burden on everyone...]