Too easy, and it'd be silly to make fun of a show called "Soul Eater" having the world "soul" in it a lot. I think it's more appropriate to use "madness" because they say it A LOT, even though there's plenty of synonyms for it. The subtitles even use the word madness when it would sound awkward in actual speech. I can't imagine how silly the dub must sound when it comes to such lines.