[ That's right, Kaeya! Now use this same prudent judgment when deciding to tell your brother you're a traitor! Oh, wait... ]

Haha, you think so? My, ah, mother used to tell me my talents would be wasted as one, but I've nevertheless always been interested in how I might use my knowledge to alleviate the suffering of others -

[ Okay, he's blathering a bit, but soon enough Kaeya's wound is nice and clean, and he is pulling out an adhesive bandage. ]

One last thing to keep it from getting hurt again before it heals.