How do I get rid of the Blind Bruiser?

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So, I accepted a gift from a certain legitimate businessman in exchange for doing some favours. It was fun at first but I'm getting sick of delivering Crates of Human Souls all over the zee. I have better things to do.
Unfortunately, the last time I tried to quit, the Blind Bruiser took offence and murdered me. Is there another way to end this questline or, failing that, a way to survive the result of saying no?
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Ranneko's Zailing Tips 3 - The Blind Bruiser
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Images: Thirdman, Albin Biju, Asiama Junior, Ketut Subiyanto