Himekishi ga Classmate!: Isekai Cheat de Dorei ka Harem
姫騎士がクラスメート！ 〜異世界チートで奴隷化ハーレム〜
A student named Odamori and his class are killed during a field trip, after which he is given the chance to be reborn by a mysterious man. His new role is that of a "Slavemancer," a being capable of controlling others and making them his subordinates, a power he embraces. His actions soon attract the attention of a Princess Knight, who is sent to stop him. This knight is revealed to be a classmate who was popular in life. Odamori, however, has a different plan for their meeting.