[It made me so happy every time someone mistakenly took my older brother to be my boyfriend------] The story of a flippant playboy older brother who actually only has eyes for his little sister, and that very sister who loves him despite his faults. The two are already in a relationship, and this manga features their flirty lovey sexy days together. May not be suitable for those that seek to enjoy feelings of immorality derived by inc*stuous relationships. (The relationship is actually rather sweet and sincere, and both parties are mature.)