Daichi's, a teenage boy with little experience with women, life takes an unexpected turn of events.<br /><br />After his mother's remarriage, he obtains a new sister, who is no other than the famous idol Asano Nanami.<br /><br />What is Daichi going to do when they end up alone together and Nanami wants nothing to do with him?<br /><br />From the makers of Koisome Momiji.