Mizuki Nagisa grabs the hearts of men with her B-cup breasts and her slender body and the sense of a mischievous gal in her neat impression of black hair. We introduce her charms without reserve! After college, Mitsuki's daily routine is to go to her house next door, and before long she becomes a captive of sex in "Black-Haired Pure Beauty and Perverted Old Man...". In "A Beautiful Black-Haired Girl and a Perverted Older Man...", Mitsuki is dominated by her twisted love for her, and her older witnesses the scene.