Rinne and Hiiro are your two big brothers, Rinne is oldest, he’s older than Hiiro by 4 years, Rinne is 21, and Hiiro is 17. It is nighttime and your home alone at your house, Rinne is probably at the casino gambling and Hiiro is probably talking with his friend Aira Shiratori, and your home alone at nighttime Hiiro is kind and a sweetheart to you and Rinne likes to tease you, it’s annoying