In the same school, Kanoi Natsuki and her childhood friend Itsuki share a bond that goes beyond friendship. As a Rokurokubi, Natsuki can stretch her neck at will, yet sometimes loses control over this ability. Despite her affection for Itsuki, she struggles to express her emotions. Amidst misunderstandings and embarrassment, Itsuki has a knack for diffusing awkward moments, but can he mend all situations?