System/Skills/Other Skills/Taboo

『Taboo：A skill that is acquired by the person who violated a taboo. You must not raise it』

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Taboo is a skill that is increased usually though committing atrocious acts.

Some of the known ways to raise Taboo:
 * Acquiring certain titles, such as:
 * 『Blood Relative Eater』
 * Certain evolutions:
 * Small Lesser Taratect -> Small Taratect
 * Acquiring a Ruler Skill
 * Using certain functions of Ruler skills