Kisara, a princess who ended up in an unwanted marriage with her childhood friends Akaoni & Aoni (huge) and an unhappy princess muddy 3P . When she was about to forcibly welcome her first night, she was helped by the demon's friends, the twins Kinkaku and Ginkaku, who hadn't been able to see each other for some time. After rescuing her Kisara, the twin demons try to fulfill the promise they made to her long ago - she stretches and shrinks despite her size.