He's around 14-15 years old. (Birthday: October 7)
15-17 years old.
Usually, OVAs (original video animations) are somewhat different from the story plotline. It's not an episode. ---- I hope that... sorta helped. >_<...
Ryoma is 12 years old and is around 151 cm, which is around 4' 9 ft.
Tezuka is Fuji's biggest rival.
Prince is 52 years old (birthdate: June 7, 1958).