Shirabe
何故 か

何故なぜ

Common Adverb
English jmdict
1
adverb (fukushi) word usually written using kana alone why;how;for what reason
あなたはなぜ働いているの。
How come you're still working?
English jmdict
1
adverb (fukushi) formal or literary term why
Other forms 何ゆえ 【なにゆえ】

何故かなぜか

Common Adverb
English jmdict
1
adverb (fukushi) word usually written using kana alone somehow;for some reason;without knowing why
彼女はなぜかふさいでいる。
She looks blue for some reason.