A sudden downpour soaked her to the bone... The older sister, Haruna Hana, who longs to go home. (NACR-613)

Having no girlfriend, I don't know when it started, but I developed feelings for my tutor, Hana. One day, Hana, who was supposed to go home, was caught in a sudden downpour and returned soaking wet. Her hair was wet, her underwear was showing through her white shirt... and her parents happened to be away that day... So I couldn't suppress my feelings and looked at Hana as she was drying her hair...