this dosnt mean a romance for adults its a story of a siblings who falls for each other, BUT they are not real siblings because hana the girl is an orphan but hiro the boy dint accept her as his own sister but his couple or lover, hana loved him as well but hana was thinking about their mother, because hana knows that Mizuo will be disapleased because she raised them like her both children. i hope u like it. im just a begginer and im still practicing so advance tnx for those who will like it. =))