eyewitness
https://gyazo.com/d162e86f3f8ec9f22b0e910eec293d80
source: [プリズマ☆イリヤの桂美々が衝撃の現場を目撃するGIF画像｜無料GIF画像検索 GIFMAGAZINE
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eye
+
witness
noun often as modifier
a
person
who has
personally
seen
something
happen
and so can give a
first-hand
description
of it:
(法廷等で証言できる) 【犯罪･事故などの】目撃者 «to, of» ; 〖形容詞的に〗目撃者の.
e.g.
eyewitness accounts of the London blitz.