Why is rena so cocky, she was not like this before. After being adopted by the leader of t&t she is acting like a know it all when she doesnt know jack sh** its honestly so annoying. Also she was not a good person in her past life unlike rubia, rena used to kill people who were innocent for money and the author doesnt touch on it that much. Just because her mother was killed doesnt give her the right to kill innocent humans. The ones who were decieved by her also had families also had kids also had parents if anything she should protect people from that and this just shows she is evil at heart and the author just changed it midway and made the mc trust her wayyyyyyyy tooooooo much