My girlfriend Yoko and her boyfriend Kenji live together. One day, their bathroom broke down so they asked my junior Mizuki if she could stay over at their place while they fixed it. Yoko had told me that Kenji was an S type, but when I saw Mizuki, she seemed like an M type through and through. As expected, she turned out to be an M after all. While she was there, I left my mark on her with saliva.
