Rihoko Sakurai Side Story+ (桜井梨穂子編 Sakurai Rihoko-hen) is the 2nd short OVA of the Amagami SS+ Plus anime series.
Months have passed since Rihoko and Junichi have become a couple. On one day they get caught in the rain and they stand in the phone booth to wait for the rain to stop. As time passes, the booth's glass become foggy and the two embrace each other and share a kiss. As the rain stops and snow starts falling, Rihoko and Junichi go home holding each other's hands.