[Oh no. Something to warn his guest about, it seems. Theodore fixes his mask briefly, totally not okay with the idea of fighting his sisters any time soon (they were fierce when they went against each other, he was not going to get in the middle of that!!), and can helpfully supply information here.]

It is a gruesome type of ritual in which one swears upon their little finger in order to 'seal the deal' as they say. If you break the swear, your blood boils out of your skin. Many people use this type of ceremony to ensure the other's full trust that they will succeed in keeping the promise, lest they wish to expire in the most grotesque way imaginable.

[Pleasant right. So no, Theodore will not participate.]