Board Thread:Theories Discussion/@comment-16798306-20130307124756/@comment-6192846-20130308024421

Envy, in its history, study, and eptymology, isn't exactly that, Ani. It is used interchangeably with jealousy but is actually a much worse emotion in comparison to jealousy (hence why it is a sin) and definitely doesn't apply to Irina and Elluka.

Jealousy is wanting something that someone else has for yourself; envy, being jealous but also wanting that person deprived of the thing you want.

Kayo was envious because she didn't just want her lover for herself, she wanted the women worse off than her and to take the happiness they recieved from him away, motivating the murders.

I warn against generalizations in this regard. The reason the two vessels are sleeping may not be related whatsoever. They could be slumbering for separate reasons.