yami no hi
Yamithe answer is "Yami"to say angel of darkness, say: "Yami no Tenshi"
Yami no kiba
Wolf of darkness is ankoku no ookami in Japanese.
'Protector of darkness' may be translated as闇の保護者 (yami no hogosha) in Japanese.
"Sugoi kaji no kami" is one way of saying "God of Great Flames."
If you are looking for the Japanese word for flames it is Honoo or Kouen
You may say 'kurasa,' written: 暗さ
Yami no hi would be flame of darkness
I'd say Avril,Aisling,Zenda or something Japanese
In Japanese it means Darkness
Kurai is dark in Japanese.
暗さにいる姫 (kurasa ni iru hime)