Kousuke Seto/Relationships

Mary
Seto first met Mary while wandering around the forest and stumbling upon her house, Mary was afraid that she would turn him into stone. However, he misunderstood what she meant and thought she was shy, and put his headphones on her to comfort her. He is Mary's closest friend.

Kano
Kano and Seto grew up in the same orphanage together and are childhood friends.

Kido
Kido and Seto grew up in the same orphanage together and are childhood friends.