Des:``Because we are accomplices. When I went to my girlfriends house as usual after my part-time job, I found Nonoka, a beautiful older sister with black and white hair who was the complete opposite of her flashy girlfriend. He was waiting for her to come home, but she didnt come home, so he decided to stay the night. However...this development was actually a plan orchestrated by Nonoka... Show off your legs and seduce me! Push her down and give her a deep kiss! Before I knew it, I was being treated as a slut by my older sister. And she becomes addicted to the blow job...