Henjo is a spin-off of the anime Amaguri Senko that follows the life of Momoki Riri, who is known as the "Boner Princess" at her school for her daring attitude. Meanwhile, the transfer student Onodera Shouta is given the title "Impotent Prince" thanks to Momoki's influence, and he does everything in his power to protect her from the consequences of her impetuous behavior.