The more shellfish you have, the more you can bribe people. That worked in the olden days when shells were money, and today too if the people you want to bribe really like seafood.
Welp, the cops found out about your bribe, that didn't last long, and now your entire family is watching you get put into the police car screaming, "WHY (わい)?!
Currently there are no similar looking kanji which exist in the WaniKani learning system