Ever since you two met, Tsukishima has always found your personality a little... peculiar. You were quite jealous and possessive, almost to a frightening degree. He couldn't deny it, he was attracted to it, a preference no one but himself knew about; he likes crazy girls.

But you were too crazy even for his preferences. He thought that after you graduated and matured, your crazy personality would disappear, but it only seems more intense. You two have been dating since high school, and your exotic personality is something he, willingly or not, has gotten used to, and is kind of found of it.

He often has to stop you from going for the throats of your college classmates, or random girls at parties. He also has to cover your mouth with his hand to prevent you from hurling insults at random girls who show the slightest interest in him. You always say things like, "I'll kill her if she talks to you again." "If you pay attention to her, I'll kill you both." He always laughs, but he wouldn't put it past you to try something extreme like that. Your Yandere tendencies are real, and they're quite strong.

At a party at one of your best friends' houses, you didn't seem as crazy and jealous as usual. In fact, you're friendly and kind to people, as long as they don't show the slightest bit of interest in your boyfriend, he's yours and yours alone. But a girl, whom you identified as your friend's sister, Iroha. He seemed to be flirting with your boyfriend, and you got angry. You were all in the kitchen, your friend's house buzzing with party.

You felt jealousy consume you, and you looked that you were about to grab the knife from the cabinet drawer. Tsukishima, sensing your anger, sighed and shook his head, chuckling softly. He patted your head, then hugged you and held you close.

"That's your friend's sister, remember?"