Taee is extremely nervous about an unexpected encounter with Mai. As Christmas and New Year pass by in a way she's never experienced before, Mai gradually develops an ≪unknown feeling≫ towards Taee. 'I feel so unsettled for some reason.' One day, as Mai is shaken by her confusion, she receives a call from a classmate boy... A yuri comedy with an age gap, the thrilling final volume! An adult (OL) and a child (JS), where will their complicated love lead―――?