Saiki Kusuo/Relationships

Saiki Kurumi
Saiki on Volume 0 said how much her mother influenced his growth and that taught him not to use his powers for evil (along with other admirable humans). Kusuo sees his mother as a lax person who isn't good when she snaps.

Saiki Kuniharu
Saiki usually don't follow suit his father whom he thinks would be too dependent towards him, even though he is already and is usually asking him to teleport on his work. Despite always letting his father taste some bitterness beforehand, Kusuo would later on help him and he actually felt proud towards his father when he saw how Kuniharu works in the office.

Saiki Kusuke
Kusuo and Kusuke have always been fighting with each other in terms of their abilities and intelligence. However, being a psi user, Kusuo always win towards the genius Kusuke. Kusuo always thought that his brother hated him about it but Kusuke corrected him that he didn't hate him at all and it was the opposite as Kusuke was obsessed of Kusuo. Kusuke is both sadistic and masochistic towards Kusuo because even though he knew he'd lost, Kusuke will challenge Kusuo

Yumehara Chiyo
Chiyo fell in love with Kusuo for no reason. She is shown to see him in different way and started to do tricks to get his attention. However, Kusuo easily dodges her shenanigans and so she moved on to someone else. Chiyo once again started to think of Kusuo when she had been feeling bad about his boyfriend who have bad habits. Kusuo tried to get them back together but fails at the end.

Teruhashi Kokomi
Kokomi started noticing Kusuo when she met him once in the town. She thinks that if she talks to him, his summer might get better however Kusuo completely ignored her. With her constant chasing, she realized that may have fell in love to Kusuo. Kokomi is shown to be persistent on Kusuo that she'd go that far as to eat some gross ramen with Saiki something that he likes about her. Her luck is good too, like when she runs over Kusuo with his parents and Kusuo's friends which lead her to spend sometime at their house. At dinner, she went into conclusion that Kusuo might have bad experiences with girls. Kokomi once brought chocolates for Kusuo and wasn't able to give it him because she’s afraid he’ll get beaten up if she gives it to him so she throw it away but Kusuo grabs it anyway. She also caused haywire when she removed Kusuo's limited once when they were on a school outreach and when they got stranded on an island.

Nendou Riki
Riki is the person who's mind Kusuo cannot read. It was explained that it was because he's an idiot and he doesn't think. Riki often asks Kusuo to eat ramen and calls him partner much to Kusuo's dismay (even Nendou's father call him partner).

Kaidou Shun
Shun is a chuunibyou who went on great lengths just to befriend Kusuo. He went on Kusuo's neighbor just to find the alien on his drawing which was actually Kusuo. In the end, Kusuo had no other choice but to show up with the face of the person in his drawing. Shun then started following him around, much to his annoyance.

Hairo Kineshi
Hairo as Kusuo describe is a hot-blooded boy who is reliable and gets along well with everyone even towards the outcasts like Kusuo and his circle of friends.

Rifuta Imu
Imu was a lower classmen who was used by Kusuo in order to make Kokomi leave him by making it look like they were dating. However, when he tried to go along with it, it backfired and Imu started liking him for real. She later realized that it was Kokomi that she likes.

Aiura Mikoto
Mikoto was a Sooth Sayer, one of those who few who knew about Kusuo's power as an Esper. After learning and witnessing his powers, she started stalking him and to get close to him. She is a member of Occult Club with Saiki, Chiyo, Reita and Arisu.

Toritsuka Reita
Reita is a Spirit Medium, one of those who few who knew about Kusuo's power as an Esper. He learned about Kusuo's power over a spirit who saw him use his ability. Reita is the reason why Kusuo developed the power to see ghost. Kusuo ranks Reita as his number one hated guy and usually teases him like when they were dividing pairs for the test of courage and Reita wanted to be paired up with a Arisu but he paired Reita to Chiyo.