九つの魂を持つ竜 => 'kokonotsu no tamashii wo motsu ryuu' would be the translation of that phrase.
The Japanese word for Dragon is "Ryuu"
pliojnhn
I think that the vault of souls is a place where they store eldurni or dragon hearts because Angela in eragon did say when you are need for power go to the vault of souls and considering that dragon heart is there souls.
Doragonfurūtsu
ドラゴンストライキ
kyuu
Nine tails is Kyuubi
Kagami Ryū
ryu-ken
'Kinzoku no ryuu'.
ryu no ha
ginryu