Chapter 4.1
"Marry me!" A world where the war between humans and demons has continued for hundreds or years... The hero was summoned from Earth to be humanity's Ace in the hole. Aoi Yamato was a regular university student, but led them to a sweeping victory and ended the war. However, the softhearted Yamato did not eradicate the demons, declaring that "the hero and the demon king will become a married couple" as proof of peace. Fast forward to a year after their marriage... Yamato and Demon Lord Rei are enjoying a lovey-dovey, newlywed life. Yamato is madly in love with his gorgeous and devoted Rei... while the serious Rei tries his damndest to be a good wife in all capacities.
Chapter 6
Mizoguchi is a small but masculine president of a system company. Due to a crisis, he decided to sign a "servant contract" with a client and young president of a large company, Washinomiya, in exchange for money. Despite being one year younger, Washinomiya let go of his sharp aura. Mizoguchi, who had always thought he wouldn't be able to live up to him, decided to accept this [deal] for his friends... In the hotel shower room, long fingers play with his body and relaxes his behind... What will happen to Mizoguchi, who is put in a humiliating situation...?!