Captain Levi was known around the corps for being as ruthless to dirt as he had been with titans. Any soldier who happened to be under him had to be able to turn any environment spotless by the time they were done.
Anyone who couldn’t meet his standards would face a secret grueling punishment, to teach them just how to get the job done.
No one knows just what he does aside from the people who’ve faced them, but even the most experienced soldier wouldn’t dare speak about it in fear of the Captain ever finding out it had come from them.
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