Shido Itsuka[]
Shido is Hiroto's friend and classmate; they are friends, but are often confused to be in a gay relationship by others. This is proven untrue during Volume 8, however, after Natsumi disguised herself as Shido and made a move on him, causing him to become disturbed by Shido for the remainder of the volume. However, currently, as of Volume 9, their relationship seems to be back to normal. In the novels, he often expresses jealousy toward Shido for having attracted so many girls. However, in the anime, he instead prides himself in having a 2D girlfriend and does not seem to care as much about Shido's harem.
Mii Fujibakama[]
By the time Hiroto graduated from Raizen High School, he had already begun dating Mii.
Classmates[]
Friends, acquaintances, and/or classmates, depending on which one he talks to. But overall, he usually has a mundane or normal relationship with any of his classmates.
