A 2nd year high school student wants to be a detective someday, but in her school there's an incident happened, somebody was murdered by someone, so she check and investigate what is really happening..Allen Kiro and Matthew John is her closes friends, they spent time together every lunch time, break time and vacant time.. also Hikaru Kirisaki is my twin brother, sometimes we both sleep in the room, sometimes we fight each other, and sometimes we have an embarrassed moment that will ever happened. Like fuck off sht