Bundled with the limited edition 10th volume of the Masamune-kun no Revenge manga.

In Edo period Japan (1603 to 1868), a strange new disease called the Redface Pox has begun to prey on the country's men. Within eighty years of the first outbreak, the male population has fallen to a quarter of the total female population. Women have taken on all the roles traditionally granted to men, even that of the Shogun. The men, precious providers of life, are carefully protected and the most beautiful of the men are sent to serve in the Shogun's Inner Chambers.

Tired of Yuuko's antics for causing more ghost stories to be spread amongst the students, Kirie challenges her to a series of games which if Yuuko loses, she must behave.

O, Hero! When Kazuya Souma is unexpectedly transported to another world, he knows the people expect a hero. But Souma's idea of heroism is more practical than most—he wants to rebuild the flagging economy of the new land he's found himself in! Betrothed to the princess and abruptly planted on the throne, this realist hero must gather talented people to help him get the country back on its feet—not through war, or adventure, but with administrative reform!