~oru suffixed to the ren'youkei 連用形 of a verb works similarly to ~yagaru ～やがる, used to say someone "dares" to do something to you, expressing angers or amazement.
ware wa makai nanbaa tsuu no Jahii-sa... 我は魔界No.２のジャヒーさ･･･ I['m] the demon world's number two, Jahy-sa... (incomplete sentence.)
Here, Jahy was about to call herself Jahy-sama. You don't normally use honorific suffixes toward yourself, specially the respectful ~sama ～様, as it sounds pompous. This is typically done by characters that are extremely proud, over-confident, or bossy.
nanbaa tsuu, the katakanization of "number two," was used as furigana for its abbreviation.
