Taiki Inomata loves badminton, but he has a long way to go before he can reach nationals. When Taiki sees upperclassman Chinatsu Kano practicing her heart out on the girls' basketball team, he falls for her hard. After an unexpected turn of events brings the two closer together, sports might not be the first thing on their minds anymore!

Taiki is preparing to celebrate his 16th birthday with his family when an emergency leaves Chinatsu and Taiki alone together! What kind of present is Chinatsu cooking up for him? And will Taiki's heart be able to handle it?