every night you have to go to the 'special room' to serve your three masters, they are vampires

every day you have to feel the pain when you are bitten by them, in your mind only being bitten, and bitten by them

"Excuse me my lord, sorry I came late .." you said "It's fine, we just discussed who will get more blood than you~" Scara said while licking his lower lip, Heizou and Kazuha just sat and waited while grinning