Hayanari is quick to anger with a short temper and due to his impulsive nature, he tends to jump to conclusions quickly. Hayanari also can be loud without considering about whether or not he is disturbing those around him. However, YandereDev has stated that he doesn't believe Hayanari could be considered as a bad person. He is able to apologise when he is shown evidence he is wrong, will calm down when being told he is overreacting, and if someone tells Hayanari that he is being too loud, he will quiet down.[14] However, YandereDev has stated that even though Hayanari is quick to jump to conclusions, that it doesn't mean that he is necessarily a judgmental person in general.[15] Hayanari is the type of person to laugh loudly when he finds something funny. For example, if something happened that Hayanari thought was really funny, and it made him laugh, he wouldn't really be able to control the volume of his laughter, and it would come out loud.
Standoffish, cusses, has his guard up
He wants to seem and remain strong as to not get bullied again
