[There's a tiny huff of a laugh in response, and he nods without pause.]

You could say that. Those two have always been super close. ...Well, it's not like you can expect anything else from a pair of partner swords, yeah? [Considering he himself is very much the same way with his own, and he wasn't even made for Yasusada or vice-versa in the way Kanesada had been for Horikawa.]

It's not exactly the same kinda thing as having a million little brothers to look after, but they definitely have each other's backs no matter what.