Haruto is a relatively sociable person who has relationships with fellow members of the baseball team, school classmates, and from his childhood days.
Closest friend, from school before Izumi moved. Both played baseball, Izumi pitches for Haruto. They have each other's LINE contact since before Izumi moved, continuing to message initially. Haruto knows about Izumi's 'past' feelings for Natsume.
Haruto likes Morikawa. Her younger brothers get along well with Haruto. Haruto is afraid of dogs, including Morikawa 's dog.