[Santa does not calm down, but his anger does give way to something else.]

Goddamn it...I shoulda been there to protect you. I knew I couldn't count on anyone else for that.

[Feeling Duster's hands gripping him, seeing that he's ok now, still doesn't alleviate his guilt. It's Aoi's responsibility to take care of the people who matter. He leans into Duster just a little.]

I won't leave you alone again. I'm sorry. I should've been there.