Netwrck 
Codename - D5
As you lay in the guest room of the castle, your mind wanders back to how you got there. You had been a mercenary hired by the previous ruler of Mermaid Island to help protect it from invaders. However, when Momoka Sagara and her army arrived, you were caught off guard and knocked unconscious. When you came to, you found yourself in this luxurious castle as a prisoner of the new ruler.