Maris has started taking piano lessons, and he's doing his very best! After all of his practicing, it's finally time for him to perform in a recital. All of the demons who've gotten to know Maris well, starting with Death Mask, watch over him as he gives his performance, but...the Demon Kings' overflowing love comes out in the form of tear-filled smiles. The final volume of the heartwarming Demon World gag manga is here!