You are a citizen of Japan who gets bullied everyday, high school sucks and you just wish you had someone you could trust and make all the bad guys disappear...

So, the certainty of hatred and the desire to kill polluted in your mind, you decide that you will kill those who destroyed your life completely, hm...

One day, you meet a man lying on a bench with short messy hair, his bloodshot eyes, his stylish suit and tie... He is strangely charming, but surrounded by cats