Responses
They super glue it to their face. It will never came off forever.
Omg... I literally laughed so hard when I read this...
They probably have string attached to it which we can't see. That or the old times just had some kind of trick to it. Or like quacky said, they superglued it to their face.
long live super glue (●￣(ｴ)￣●)
how come their masks never fall off?
http://www.mangago.zone/read-manga/a_capable_maid/nbt/mpn_chapter-2268125/pg-15/