This sentence is from a light novel. Right after the character has defeated a
dullahan, one of the characters starts praying and says this:

> 「祈りを、捧げている。
> デュラハンは不条理な処刑で首を落とされた騎士が、恨みでアンデッド化するモンスターだ。こいつとて、モンスターになりたくてなった訳ではないだろう。自分で斬りつけておいて
> **何だ** が、祈りぐらいはな....」

I don't think I've come across 「何だ」in this 'mid-sentence-like' manner yet, but
judging from the definitions here:
<https://dictionary.goo.ne.jp/word/%E4%BD%95%E3%81%A0/#jn-165822>, this 「何だ」
can just be used to express doubt or some kind of uncertainty of the speaker.

All in all, it still looks a bit weird to me, so I want to ask what really
stands behind this here.
CC BY-SA 4.0
2020-01-08T19:05:03.970
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2020-01-09T02:41:39.037
2020-01-08T23:02:51.220
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question
meaning
Meaning of 「何だ」in this sentence