Osananajimi wa Bed Yakuza!

Tomoki has several old friends. He cherishes the beautiful memory of them, but they have grown up and all become cheeky, unfriendly, and moody. One day, an old friend of his, Kotono, comes back to his hometown. He used to love her, and he gets excited to hear that. But, she has changed as well. What will happen to him and his old friends in the end...?