well... oean means umi, and ryuu means dragon
The Japanese word for Dragon is "Ryuu"
Doragonfurūtsu
ドラゴンストライキ
'Kinzoku no ryuu'.
ginryu
ryu no ha
ryu-ken
Kagami Ryū
Doragon iki
to say dragon in Japanese is 龍 and it is read ryuu hope this helps :)
'Small dragon' would be 小さい竜 (chiisai ryuu) in Japanese.
"chi", and "ji" means blood ryu means "dragon"