Satoshi lives together with a housemaid in a Western-style building while his wealthy father is away on business. One day, she got in an accident and was hospitalized. His classmate Shino was at the scene of the accident and felt partially responsible for the maid’s injuries. She proposed that she will take over the maid’s duties until she recovered. That’s how a girl that he was a bit interested in at school ended up being his maid. It was the beginning of heart-throbbing days living together with his classmate.