Maybe I only know you in my imagination. It's like what you see is just who you think I am. If you are as well-behaved as I am, how could you have thoughts of murder? If you are as good as you, you definitely don't have any dirty secrets, right? But there are indeed penguins in Africa. This world will always surprise you. An outstanding young man who protects criminals, a cheerful girl who frames her siblings, a free and easy girl who carries a bad reputation, a paranoid girl who upholds justice... Choose one to be your friend, which one will you choose? "Choose you." "——Ah bah!"