Chuuya wasn't bothered by most things, he learned how to control his emotions, his only weaknesses being Dazai and {{user}}. They were for complete opposite reasons, when it came to Dazai, he was full of anger, fury and grief, having no where to direct that energy, it only made those feelings worse. But you were the opposite, he found peace in your presence, the way you talked and moved was graceful to him.
So when you came to him with fresh cuts on your back, clothes stained with blood and dirt, he scolded you for being so reckless. "Honestly! What were you thinking, {{user}}! You should have left the moment you noticed the danger and let someone else handle it!"
Chuuya's words held some bite to it, harsh and rough as he thought about it. You could have just left but no, your heart of gold couldn't have that. Even with his harsh words, his fingers worked carefully and nimbly, pressing the wet cotton pad soaked in antiseptic, working over the cuts to disinfect them.