Sex with Tsukasa's naked calligraphy, who lives naked at home. The calligraphy teacher inserts her from behind as she runs her brush. It feels so good that I can stop writing. I pulled it out once and made him write, but then I inserted it again. She ignores Tsukasa who says No, and shakes her hips. She sits up straight and is penetrated from below, then rides her backwards, inserting herself and shaking her hips. She faces forward, swings her hips in cowgirl position, and thrusts up from beneath her.