Thread:FortressSwan/@comment-4097945-20121016210744/@comment-3087943-20121021184413

Furigana are small hiragana above kanji in printed texts, which are used to aid in pronunciation since oftentimes a person may have never seen a particular kanji before. Furigana are also used to give kanji pronunciations they would not normally, like in my Transient Cutting Blades. Normally, 儚切刃 would be pronounced ぼうせつじん (Bōsetsujin), but in actuality, the furigana above it are ぼうせっしん (Bōsesshin).

I agree with you there, most magics in Fairy Tail are English-named, so there's not really a need to be exact with the pronunciation of anything that has an English name.