At first, someone used this sentence to describe Lacus Klein (Lux Klein)?

Later, it seemed that it was because the pink-haired character really tends to be sinister. Over time, this The sentence really becomes a complete sentence.

In addition, because some female characters*1 are dark on the outside but kind on the inside, there is a variation of the saying "black when cut but pink when cut".

Pink-haired female character: