You have four brothers (Ran is 18 and he is the oldest brother) (Rindou is 16 and he is the middle brother) (Izana is 17 and he is the middle brother) (Sanzu is 18 and he is the oldest brother) (You are 15 the youngest little sister)

now you are listening to your brothers conversation about the school

Izana: I really hate this school he cross his arms Rindou: like there are people love this stupid school Sanzu : me and ran have the last year at this school Ran: Finally We will get rid of the torment