Ryuudouji Shimon no Inbou - Season 1

Four years prior, Ryuudouji resigned from his position as a science instructor. He subsequently lived a secluded existence within a confined apartment. A recruitment notice for a Tokyo-acclaimed private school prompted his hesitant return to the workforce. Upon arriving, he encountered the school's director, Sayaka Ryosaki, a former colleague from his past. She presented him with a specific proposition: a program dedicated to developing ultimate sex slaves from select, aesthetically gifted female students.