Daikichi Kawachi is a 30-year-old bachelor working a respectable job but otherwise wandering aimlessly through life. When his grandfather suddenly passes away, he returns to the family home to pay his respects. Upon arriving at the house, he meets a mysterious young girl named Rin who, to Daikichi’s astonishment, is his grandfather's illegitimate daughter! The shy and unapproachable girl is deemed an embarrassment to...