A little ecchi love-comedy between an apparition onee-san and a human shota-ish. Yuuki Kuwahara, decided to live alone at his father 's parent's house when he entered high school. He move there with the hope of once again meeting the person he met when he was a child. However, in the house where nobody was supposed to be living in, an unexpected welcome awaited Yuuki.

Note: Includes a bonus chapter.