The plain and awkward high school girl Neneko makes a bold confession to her teacher, Teshigawara-sensei. But that brings on an unexpected circumstances...?

Kaoru is a 17-year-old virgin who has an SM fetish. He secretly dreams about an SM relationship with his childhood friend Nana. One day Kaoru's mom asks Nana to hide all his SM toys so he'll study for a ch...

The story begins eight months in the future of the main story, with Nana and Kaoru in the summer of their final year of high school. It uses a different supporting cast and a different location for the setti...

After moving to Tokyo, Totsuka Azusa's daily life had changed into nothing. For her, people left company because of marriage or due to their own circumstances. After dinner, she felt a presence of someone be...

After coming out of a tunnel… it was pitch dark. When I awoke, it was pitch dark. First, I need to grasp the situation… While lost in thought, white, foggy figures appeared, and as usual, it was utterly ...