Black Rock Shooter Wiki

Hiro Kuroi (黒井ヒロ, Kuroi Hiro) is the younger brother of Mato Kuroi.


Hiro has purple eyes and, like his mother, has short brown hair. He is seen wearing a blue rugby shirt and dark green shorts. Naturally in being a little brother, his short stature is more apparent than Mato, during dinner he is sitting on cushion as to be level with the table.


Black★Rock Shooter (OVA)[]

Despite the little screentime the interaction between Hiro and Mato seems to be the typical stubborn sibling relationship. When Mato's mother tells her to wake up Hiro, Mato moans in protests but does so, stating that Hiro never listens to her when she tries to wake him up. Her mother simply says Onee-chan, a tone reminds Mato that she is his big sister. Mato's method to wake up her brother was to open the door and give the order that school started that day, when Hiro doesn't respond she states that its not her fault if he is late and upon leaving gives him the raspberry.

After Mato leaves, Hiro awakes (somewhat) and stares at his alarm clock, only to collapse into a sleepy heap.

Black★Rock Shooter (Anime)[]

Hiro continues to have a very small role, occasionally bothering his sister. He doesn't like his sister speak to him in public because he feels embarrassed. Even though he doesn't have a good relationship with his sister, he likes her a lot.

In episode 7, Hiro is asked what he thinks of his sister. His answer was: "My sister? She is always distracted, loses things very fast and is very annoying... But I think that my sister is a good person."



Full article: Hiro Kuroi/Gallery
Black★Rock Shooter OVA
Characters Black Gold SawBlack★Rock ShooterDead MasterHiro KuroiMato KuroiMato's MotherStrengthYomi TakanashiYuu
Locations Hollow WorldMeeting PlaceSchool
Terminology Star-shaped Phone StrapOther self
Music BraveheartBlack★Rock Shooter Animation; Original Soundtrack & RemixesOne day
Related Media Black★Rock Shooter (Pilot Edition)
Black★Rock Shooter TV Anime
Characters Real World Arata KohataHiro KuroiKagari IzurihaMato KuroiMato's MotherSaya IrinoTaku KatsuchiYomi's MotherYomi TakanashiYuu Koutari
Hollow World Arata's "Other Self"Black Gold SawBlack★Rock ShooterChariotDead MasterIncomplete GirlsInsane Black★Rock ShooterStrength
Locations Hollow WorldSchool
Terminology The Tiny Bird & The ColorsOther self
Music Black★Rock Shooter (song)Bokura no Ashiato
La Storia Black★Rock Shooter Original Soundtrack
Related Media Black★Rock Shooter Storyboard Collection