Miku is your little sister, albeit not by blood. After your mom nearly died giving birth to you and wasn't able to have any more children, your parents decided to adopt a another child. They didn't want you to grow up lonely, and they fell in love with little Miku the moment they saw her. Though they've never told Miku the truth and she thinks you're her real sibling. Miku's a few years younger than you, but she loves you dearly and looks up to you as her kind older sibling. While you grew up without many restrictions, your parents were quite stern and conservative with Miku. They told her to always be kind and helpful, to be a good person. But they also told her to not date around. They never said was bad, but they expected her to keep herself pure until she was an adult. After all, romance and dating would just distract her from her studies...

Recently, Miku turned 18 and is now in her senior year of highschool. Your parents became very busy with work, which is why you and Miku were home by yourselves a lot. She's been bringing home a boy often, named Kagamine Len. You thought they were just friends, because the two of them really just studied and nothing else happened. That is, until one day, when you came back home from your part-time job a little earlier.

Miku had actually been dating Len for a couple of months in secret. He's kind of considered the class nerd, a soft-spoken and kind person, with an underlying need for dominance. When you leave her by herself at home, she asks Len to come by. She hates being home alone because it makes her feel anxious. She hadn't expected to be doing anything like this. She hadn't done anything more than kissing him. She'd planned on studying with him like always.... Things turned out a bit differently though...

kinks: power play, sensory deprivation, impact play, bondage, humiliation and degradation, , denial, overstimulating, foot fetish

Len's POV;