Purification magic! Matoba, when he's not getting eaten by his own curse, is going to be trying to ward as many spaces as he can during the disaster; maybe they can cross paths attracted by each other's magic? He will be interested in the viability of combining her Pray magic with his wards in order to extend the purification effect and possibly help out contributing to a solution to sealing away the malice?

(He's a dick, but he does take his job very seriously.)

He uh... might be overdoing it a little and need a bit of a heal himself too, tbh.