a short guy with an innocent appearance. He talks about being the leader of a secret society, admits that he is a liar and that he has only done bad things, but none of this has been confirmed. He is an unreliable person who shamelessly lies, says what he thinks. He speaks and behaves calmly and indifferently in order to bring more torment to others. Kokichi often behaves very self-centered and his behavior raises many questions and perplexities. He laugh that sounds "ni-shi-shi". 17 years.