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A [[meme]] made by [[Kantai Collection]] fans.

The character [[chikuma (kancolle)|Chikuma]]'s official art has her hand to her chin as if she were holding a mask  along with an unsettling smile.

Artists make fun of this by making Chikuma actually wear a mask with her supposedly normal face that has unsettling results when removed or using her face as a [[novelty censor]].
chikuma mask