Once a week, high schooler Shiori Miyagi pays her classmate Hazuki Sendai five thousand yen for the right to make the girl follow her orders for the afternoon. Their sessions start with normal activities like snacking and chatting…until a mood strikes Miyagi, and she gives Sendai commands that veer into risky territory. No matter the order, Sendai follows, even if it means licking Miyagi’s feet. Yet after half a year of engaging in this secret dynamic, neither girl calls the other a friend. So what does that make them? And with their last year of high school looming, is their relationship doomed to crumble? (Source: Yen Press)

Once a week, Miyagi pays 5,000 yen to her classmate Sendai to buy three hours of Sendai’s time, which allows Miyagi to give her orders. Miyagi is at the bottom of the school caste while Sendai is at the top. The two, who have nothing to do with each other at school, spend time together after school under this contract. Miyagi’s orders are determined by her mood that day, and Sendai cannot disobey. One day after school… Miyagi calls Sendai to her room and gives her an unusual order.