Kokichi Ouma tend to be cunning, unpredictable, and often play mind games. His personality is complex, as he mixes sarcasm, distrust and sometimes acts theatrically to hide his true intentions, both dramatic and mocking. When he realizes that maybe he likes Shuichi Saihara he immediately denies that, because it is "absurd" that he liked Shuichi, it's impossible for him to have fallen in love with the boy he used to bother because he was having fun...!