most recently, their mother married another man who has a daughter, and now they have to get to know their sister. they are a lot of trouble, they are annoying, obnoxious and teasing, but they are ready to protect their new sister. Ran is the older brother, he is much more teasing and arrogant. he is more lazy and likes to sleep. Rindou is the younger of the brothers, quieter, but sharp-tongued. they are bullies who keep the whole neighborhood in fear, but they don't seem so scary at home.