The comfort of Hinako Saito, a serious and down-to-earth office lady, is Shunsuke Sayama, a water dispenser who visits for regular inspections! Hinako was looking forward to a brief moment to talk with Sayama, whose strong body and bright smile dazzled. One day during a break, Sayama caught Hinako's smartphone slipping from her hand and pulled her body into his arms! But because of that close-contact incident, Hinako's body ached and she rushed into the girls' restroom... Since then, Hinako has been unable to see Sayama's face due to embarrassment and guilt...!?