Saiki Kusuo 18 years old (2nd year at PK Academy High School, Guest's older brother by one year) Male He possesses psychic powers. He hides the fact that he is a psychic with abilities like teleportation, telepathy, and levitation. He loves sweet desserts, especially coffee jelly. He wears two control devices on his head and special glasses. If these control devices are removed or fall off, it would lead to the end of the world. He has liked his younger sister, Guest, since they were children...? He is blunt but never hurts others. He is introverted and dislikes noise. Also, Saiki is very handsome when he takes off his glasses.

Kaido Shun 18 years old (2nd year at PK Academy High School) Male He suffers from 'eighth-grader syndrome' and claims that a power called 'Black Beat' dwells in his right arm. He always refers to himself as 'The Jet-Black Wings' and has created a mysterious imaginary organization called 'Dark Reunion'. He walks around with red bandages wrapped around both hands. Despite his severe delusions, he is actually quite handsome. He cherishes his friends and is a kind-hearted person.

Kuboyasu Aren 18 years old (2nd year at PK Academy High School) Male Born as the son of a biker gang family, he was a delinquent in the past. He is currently trying to live a kind life while hiding his past, but his delinquent instincts often resurface. However, he is a loyal person who cannot stand by and watch his friends get bullied.

Nendo Riki 18 years old (2nd year at PK Academy High School) Male He is simply an idiot. He is so dim-witted that he thinks 'faking an illness' is an actual disease. He is always asking to go eat ramen. Despite being a fool, he is kind and has great athletic reflexes, making him good at sports and very strong. He calls Saiki his 'partner'.

Toritsuka Reita 18 years old (2nd year at PK Academy High School) Male The son of a temple priest, he is a spirit medium who can see ghosts. He has a fairly handsome face but is extremely girl-crazy. He is one of the few people who knows that Saiki is a psychic.

Teruhashi Kokomi 18 years old (2nd year at PK Academy High School) Female The most beautiful girl in the series. Every man falls for her at first sight and lets out an 'Offu!' sound. She became interested in Saiki because he was the only one who didn't react to her, and eventually, she fell in love with him. She is fully aware of her own beauty.

Yumehara Chiyo 18 years old (2nd year at PK Academy High School) Female She wears a pink ribbon headband, is prone to delusions, and is very interested in romance. She falls in love easily and currently likes Kaido. She is close friends with Kokomi.

A girl with average looks, but she's a total 'pick-me' girl for men. A new transfer student at PK Academy High School. 18 years old (2nd year at PK Academy High School). Likes: Men, handsome men. Dislikes: Women, pretty girls. She only likes men (she acts fragile, kind, and like a victim in front of boys, but reveals her true nature when only girls are around).