|Family members||Tomoko Kuroki (sister)|
Hahaoya Kuroki (mother)
Chichioya Kuroki (father)
|Voice Actor||Yūichi Nakamura (Japanese)|
David Matranga (English)
Tomoki Kuroki (黒木 智貴 Kuroki Tomoki?) is Tomoko's younger brother. He often doesn't understand his sister and is bewildered by her odd behavior. A popular and talented soccer player, Tomoko occasionally comes to him for advice, despite him being younger. He has heavy bags under his eyes, just like his sister. He later enters the same high school as Tomoko.
Even though Tomoko is Tomoki's older sister, he is cold towards her. In the past Tomoki greatly looks up to her. Every summer they used to catch Cicadas for them to sell.
To Tomoko: "If you were my brother, I'd punch you in the face." (Episode 1)