Hatsuharu Sohma , age 15-17, often called Haru, is the Ox of the Chinese zodiac. Hatsuharu is depicted as having a Yin and Yang personality, which mirrors the Ox's traditional personality characteristics in the zodiac  He is an older-brother figure to the younger zodiac members, and is usually calm and placid, but, if provoked, can become enraged.  The Sohmas call these two sides of his personality his "white" and "black" sides; his hair is white with black roots, and his zodiac form is a black-and-white spotted Ox.  He has a reputation in the family for being somewhat stupid, and when he was a child he blamed Yuki Sohma, the current Rat, for it because of the story of how the Rat tricked the Ox to become first in the zodiac. After Yuki asked Hatsuharu whether he believes he is stupid, he realized the mental trap and has since loved Yuki. SPOILERS Hatsuharu is in love with Rin Sohma and has an on-again/off-again secret relationship with her. He is protective of those he cares about, especially Rin, Yuki, Kisa and Hiro, and once confronts and almost punches Akito for confining Rin, and looked for Kisa when she ran away from home. Hiro admires Hatsuharu as a brother figure, even calling him Haru-nii ("big brother Haru"), but also believes that Haru is too nice to everybody for his own good.  Hatsuharu has a bad sense of direction, and once becomes lost for three days in another town while looking for Kyo in order to challenge him.He likes to tease Kyo in a deadpan way; Kyo in turn calls him "downright lewd" for saying Momiji should keep wearing the girls' uniform until he gets bigger.  He is usually shown wearing various jewelry and leather accessories, which, according to an author's note, he makes himself.  Natsuki Takaya derived his name from the first month, hatsuharu meaning "new year" or "early spring," which is the month of the Ox, of the traditional Japanese calendar, though his name is written with different kanji than the month. 

His voice should be a mid-low and maybe monotone except when he gets emotional.