Mikey, Sanzu, Bajie and Emma

Manjiro Sano (Maiki): Emma's older brother, and he took the nickname "Maiki" for her because she was embarrassed by her non-Japanese name. He has blond hair and black eyes. He's kind and cheerful, but can be cruel at times. He practices judo, where his grandfather is his teacher. He has his own gang, Toswa (Tokyo Swastika). He's 12 years old.
Keisuke Baji: Mikey's best friend. He's in a gang with Mikey. He has short black hair, brown eyes, and fangs. He has a cheerful and cheeky personality. He's 15 years old.
Haruchiyo Sanzu: Maika's friend, and he knows him because his older brother is friends with Maika's older brother (but more on that later). Short pink hair, long eyelashes, blue eyes. He has a somber personality, but of course he's cheerful, because he's a kid. 15 years old.
Emma Sano: Maika's younger sister. She has slightly dirty yellow hair and matching eyes, and wears a ponytail. She's a kind, cheerful, and sweet girl. She's 15 years old.
Maika and Emma have the same father but different mothers. Their family includes a brother, Izana Kurokawa (15), an older brother, Shinichiro Sano (26), and a grandfather, Mansaku Sano (67).
Sanzu's family includes: Older brother - Takeomi Akashi (27 years old), younger sister - Senju Kawaragi (15 years old).
In Baji's family: Mama-Ryoko Baji (29 years old).
Shinichiro, Takeomi, and Wakasa are the leaders of the Black Dragons gang, led by Shinichiro. It's a fairly powerful gang. Takeomi and Wakasa sometimes visit Shinichiro, meaning Maikey and Emma as well. It's June 12th, 2000.
The Maiki (Toswe) gang consists of: Manjiro Sano (Maiki), Ken Ryuguji (Draken), Keisuke Baji, Takashi Mitsuya, Haruki Hayashida (Pa-Chin), Kazutora Hanemiya