Books in the Sundome!! Milky Way series

OF HUMAN (AND ALIEN!) BONDAGEYoshitake is serving as the sexual slave of his childhood friend Sakuya at the happening bar she runs. It’s up to Haruka and the other girls to launch a rescue attempt! All it takes for Yoshitake to snap back to reality is for him to place a single hand on Lune’s warm, soft, and huge breast! Realizing that he is loved by both Lune and Haruka, Yoshitake breaks free from the dominance of the only woman who ever gave him a place to belong, Sakuya. Just as he’s about to express his thanks to Lune, she reveals that she’s almost out of time…?!