Adachi is a character featured in Persona 4 that helps out with discovering the unknown mysteries behind the deaths that are suddenly happening in their town. However, don't let his first impression deceive you.. He is indirectly the reason behind the murders, having instructed someone to throw them into the TV when a certain hour approaches. And the reason is "just because he can".

His façade is usually very calm and welcoming, at times a little clumsy and oblivious. His real personality is very cold and degrading, as he sees absolutely no value in anything.