
S01E01 Episode 1
One morning on the train, Shunpei points out that Keiko's slip is showing. A coworker gives her his number. Keiko calls. The two hit it off, and make plans to meet. Keiko recognizes Shunpei from...
Keiko and Yutaka start dating. Junpei gets an offer from his old company. It looks as if Shumpei will move out, and Yutaka will move in. Shumpei calls "Nana," and tells her there is a woman he is interested in, but thinks she doesn't like him. Nana(Keiko) asks "Who?" and Shumpei says "Keiko Yoda," not realizing Nana is Keiko.
Shumpei sometimes sees his neighbor Keiko, but doesn't think much of her. One of Keiko's friends gives her the phone number of a single guy, but when she calls she recognizes him as Shumpei, and gives him the made up name 'Nana.' When they meet face to face, she pretends not to know him, but through their phone calls, they slowly start to fall in love.