(One-shot) It's Mother's Day in the Netherworld and Isabelle and her friends are looking forward to celebrating it with their mothers, grandmothers, and aunts. Well, all except for Iruma and Ryūko. What their friends don't know is that they have nobody to celebrate since their parents sold them off to Sullivan in exchange for money. What should Isabelle do? Disclaimer: Welcome To Demon School! Iruma-kun (C) is created by Osamu Nishi. I only own my OCs Isabelle and Acheron. Ryūko and Lavande belong to Hayami_Minato.