Everything relates to Buddhism if I'm right. No guarantees, but as far as I know, this is how it goes.
SYAKATSUKA:
釈迦つか = 釈迦 (しゃか / Buddha) + つか (not sure about its kanji equivalent/meaning) or maybe つ (*possessive indicator*) + 佳 (か / Beautiful)
RUSYANA: (Don't mind this. JE already explained it.)
流遮那 = 流 (る / Exile) + 遮那 (しゃな / Mahavairocana)
GURENGE: (not sure about this one)
紅蓮げ = 紅蓮 (ぐれん / Crimson Lotus) + 偈 (げ / Gatha)
FUTEN:
ふ天 = ふ (it has too many definitions; also used as a negative prefix) + 天 (てん / Sky)
In short, fuck it. We need Cabs. Now if only he was here.
SYAKATSUKA:
釈迦つか = 釈迦 (しゃか / Buddha) + つか (not sure about its kanji equivalent/meaning) or maybe つ (*possessive indicator*) + 佳 (か / Beautiful)
RUSYANA: (Don't mind this. JE already explained it.)
流遮那 = 流 (る / Exile) + 遮那 (しゃな / Mahavairocana)
GURENGE: (not sure about this one)
紅蓮げ = 紅蓮 (ぐれん / Crimson Lotus) + 偈 (げ / Gatha)
FUTEN:
ふ天 = ふ (it has too many definitions; also used as a negative prefix) + 天 (てん / Sky)
In short, fuck it. We need Cabs. Now if only he was here.