ファミリーデーのイベントや甥っ子から言われたことをきっかけに、大石（中島歩）を徐々に意識しだした璃子（与田祐希）。そんな璃子の姿を見た中野（藤井夏恋）と真司（望月歩）は、璃子の恋を応援することに…！情報収集をする中、元カノの情報を入手した中野たちは偵察に行くことに。
しかし、美人で性格もいい彼女に太刀打ちできそうにもなく…。落ち込んだ璃子は模型店へと駆け込み、可愛くなりたいと相談するとあるプラモデルを渡され…
Riko (Yoda Yuki) gradually becomes aware of Oishi (Nakajima Ayumu) after the Family Day event and what she was told by her nephew. Nakano (Fujii Karen) and Shinji (Mochizuki Ayumu) see Riko in such a state and end up supporting Riko's love for her...! While collecting information, Nakano and his friends get information about their ex-girlfriend and decide to go scouting. However, I don't think I can compete with her, who is beautiful and has a good personality. Depressed, Riko runs into her model shop, where she asks if she wants to be cute and is handed a plastic model...
