I'm soory for this comment if i missed anything, but i hope you are doing alright considering you havn't uploaded in a while. but i might have missed a comment explaining, anyway hope everything is alright.
I have an explanation at the bottom of the latest chapter. Just had trouble finishing the ending for Volume one. It's done now; Expect me to post it soon-ish, probably before the end of the month.
Not gonna lie, kind of curious to see if possible the complete Deck List Yumi actually has, on note with the fact she actually has no limit on Extra Deck