Tachibanaki Keisuke, a young man in his first year as a full-fledged member of society. While the company he works for is a small one, it's the job he always wanted to do and his life is pretty satisfactory. Except... he's now living alone for the first time in his life, and it's becoming a bit exhausting. It's then that a certain thought crosses his mind...

"If only I had a girlfriend..."

But one day, Keisuke injures his arm. As a result, two beautiful girls - Chika and Yuri - move in to help him. Despite their gaudy appearances, the two of them are a pair of kind, devoted girls. They decide to help Keisuke, who is now terribly inconvenienced, with his everyday life as a result of his injury.

But the two of them have their own dreams and goals... and don't mind sharing their secrets with him...