Hayashi Taro is still a high school student, but lives in Tokyo with Yuko, who works at a no-pan coffee shop. Shigeya Yoshida, an architectural designer in Yokohama, likes June and goes to hotels. Yoshida's wife, Hideyo, notices the existence of June and is very jealous. In addition, Hideyo had a younger brother named Kiyoshi, who had feelings similar to love for his sister. When June and Shigeya were dating Shonan at night, Hayashi Taro attacked Shigeya....

初夏の鎌倉。ゴムボートのオールを操る宮坂六月。大学のホテル学科を出た六月は、海辺のリゾートホテルで支配人になることを夢見て働いている。脇で体を丸めて眠っている高校生の弟・林太郎は東京で、ノーパン喫茶で働く優子とリッチな生活をしていた。