Kazuaki and Sei start chatting because of an email, and the two of them start interacting at their company.

Kazuaki and Sei get to know each other more deeply through company activities, which makes Sei decide to become more proactive.

Sei helps Kazuaki out at the office, and the two of them go to an art museum together where something unexpected happens.

After having a meal together, Hagiwara learns more about Nakarai's relationship with Fujisawa Kazuaki. Nakarai visits Kaori's nail salon to get his cracked toenail fixed. Hagiwara hears something disturbing about how Kaori thinks of him.

Kazuaki makes an unexpected request to Sei in the rain, and the two of them become more intimate.

Kazuaki tells Sei that he is considering moving to Kamakura and quitting his job, which puts Sei in a difficult situation. Meanwhile, Kazuaki's relationship with his girlfriend takes a turn.

Sei deliberately avoids Kazuaki and the two stop talking. However, when Sei learns that Kazuaki has broken up with his girlfriend, his curiosity gets the better of him, and the two end up meeting in the rain again.