H+P: HimePara

Kamiku Kyotaro is a disciplined high school student skilled in kendo. He suddenly finds himself transported to another world where he is summoned by Trekwards Kingdom. The queen is suffering from a mysterious illness, and the kingdom faces serious difficulties. In this world, women hold positions of power over men. Kyotaro is placed in the royal harem and required to engage in relations with five princesses in an effort to produce an heir.