S01E01 Pilot
Locked out, 30yo Natsuki is helped by 25yo Sôichirô. Natsuki's marriage intro goes awry, but Sôichirô comforts her, takes her up in a plane. Back at Haruko's, she introduces to Natsuki and Fuyumi her brother,...
Nazuna shows up to return Sôichirô's coat, and thank him. Nazuna and Sô-chan go on a date. Natsuki bumps into Kuga her former tutor, now a doctor. Natsuki waits for his call in Sô-chan's room. Sô-chan wonders who she is waiting for.
29-year-old Natsuki bumps into 25-year-old Sôichirô while on vacation in Hokkaido. Back in Tokyo, Natsuki discovers Sôichirô is her friend Haruko's younger brother, and they all end up living together along with Fuyumi, a third friend. Natsuki and Sôichirô form a strong bond, but become involved with other people all the while wondering who they should be with.