Assassination Classroom/Ansatsu Kyoushitsu Various x Reader one-shots

Karma x Vampire!Reader {Contract}

Requested by @mikalover23

Since there's so many vampire one-shots, I figure I should just do them first before I mess up all my ideas! And Karma is also in this one so I...yeah...

P.S. you know what, I am just so stupid. I should just write the other one-shots first instead. Now this one is almost like copying the last one.

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Your POV

Taking one last drink from his neck, you reluctantly pull out your teeth, licking the wound quickly before pulling away, wiping your mouth. "Gomen, I took too much this time." You apologize, looking at his pale face carefully.

"It's fine. I just need some rest." The boy replied, closing his mercury eyes and lean back down onto the bed.

"Then I will go tell Karasuma-sensei you aren't going to his lesson. You...are you sure you are okay? I can bring you back home if you want." You add hesitantly, standing up.

"No need. Just go before they worry about you." He said, a bit annoyed.

Nodding, you take one last look at him before going out of the nurse's office, walking out of the building.

The way the two of you met is...quite funny. You have just woken up, wanting to "eat", and when you jumped out of your window, Karma was right below there. Feeling hungry, you started drinking his blood without making him forget everything.

When you were finally full, he was almost dead from the loss of blood, so you fed some to him, but also forgot that if you gave a human your blood, it would mean that you could only take his blood, and that means that you have made a lifelong contract with him: he gives you his blood, you would in turn share your lifespan with him. (I...don't know what else to write, so...this is how everything happened in the good ol' anime style! Yay...)

And now, in order to prevent yourself from going on a killing spree when you can't "eat", you went to his school to follow him everyday until he finally lets you drink his blood, and as there's a possibility he has gone a little crazy from knowing that he has become a long-term "food container", he only allows you to go near him when you really need to "eat".

"Karasuma-sensei, Karma is not feeling well, so he won't be able to come." You said to the air force intructor, whose forehead wrinkled slightly before nodding, "He seems to be unwell for the past few months. If he keeps going on like this, he wouldn't be able to catch up with the training."

"I'll make sure to tell him that." You smile nervously, quickly walking over to the other students.

"(Y/N)-chan, why does it seem like everytime you are with him alone, you would come back and say that he is sick?" Kayano asks curiously, and you freeze at her words.

"Ah, that's...um..." you stammer, trying to think up with a better excuse.

"Could it be...that the two of you have been doing adu–ouch!" Okajima smiles pervertedly before screaming in pain, rubbing his head.

Kataoka glares at him, "Not everyone is doing something perverted!"

"But I didn't even say anything bad! Right, Isogai?"

The boy looks away, replying, "Well, not to be rude, your look kind of explains it."

"Not even you!"

Breathing out in relief, you silently thank Okajima's perverted thoughts for once, even though he was the one who got hurt.

Both physically and mentally.