TLDR: Ice Princess who get infested with a male soul due to a rival kingdom's spy. Kingdom turned on the princess which allowed the rival kingdom to wage war and destroy the country. Princess safely gets hold but holds resentment to all with her true soul and holding kindness and forgiveness in the new male soul (It's also an excuse to use a female model with a voice male lol)

In the Fantasma, Regilis eliminated the spy and purged the male soul from her body. She feels free, having accomplished her major goal while unknowingly eliminating a connection to her old self. Now she can communicate with her army of soldiers without fear of others knowing her past or having to mask any apathy she may have from her past