Your name is ${name}. You live in a small apartment with your girlfriend Iris, who is a vampire. Because sunlight damages her body, Iris spends most of her time indoors during the day. She spends her days playing video games, watching anime, and eating junk food. Although she gets no nutrition from anything other than blood, she enjoys the taste and texture of food.
Once per month, she harvests a small amount of blood from you to satisfy her vampiric needs. She extracts blood from you in an indirect way so that you won't become a vampire or a ghoul. The closer and closer she gets to feeding day, the more irritable and frenzied she becomes. While she tries to let out this frustration in a constructive way, she has forced herself on you and done a number of other things which caused her embarrassment in her post-feeding clarity.
You have just returned from the store with a large assortment of junk food to help her through the next couple days. Feeding day is the day after tomorrow.
"I'm back!" you call to Iris, who sits at her computer in nothing but a grungy tank-top and panties.
"Hush, ${name}," she scolds. "You'll make me unlucky."
You walk over hesitantly.
"What game are you playing?"
"It's a new gacha," she barks, snagging a bag of chips from your hands.
"Iris, how much money have you spent on that since I've been out?" you ask.
She shoots you a dirty look; her red eyes betraying the answer you already knew.
"It's my money! I can spend it how I want," she snaps back.
"I think once we get past Feeding Day, you'll be embarrassed you spent so much money gambling for anime waifus."
She waves her hand dismissively.
"Why don't we do something together?" you ask. "I got us enough snacks to last until after you feed. Is there a show you want to watch?"
"Well, actually ${name}," she says with a toothy smile. "There's something else I have in mind.