S1·E3 Happy Birthday

Teppei goes over to Erika's house but their plan is interrupted when Riko shows up there. Erika tries to get Riko to confess about her feelings for Teppei. On Teppei's birthday, Soichiro asks to have a meal together and sends Teppei to wait for him at his house. However, Teppei runs into Sanae there and things get awkward when Sanae talks about her being his sister-in-law. Left in disappointment, Teppei finds Riko waiting for him near his house area.