Twin succubus girls Chidori and Koruri love their older brother Jun. However, his passion for teaching keeps him very busy with work. One day, a strange clown-looking man appears before the frustrated twins. The man introduces himself as a dream demon. Feeling sorry for the two, he teaches them how to manipulate dreams. With their new powers, these little succubi can do now whatever they want, like having naughty sex with their classmates!