The Royal Detective

After failing a mission, along with losing Lia, Louis became to ashamed to hold his tittle as a Royal Knight. He felt as if he wasn't worthy, so he just disspeared from the public eye, without any trace. His disapearance was big news among the high officials in the kingdom as Louis had an amazing reputation for his feats, earning himself the name 'The Royal Killer'
5 years later, Louis is suddenly contacted but the king, who has requested for Louis's help once more. Still having the weight of his past failure along with Losing a dear friend, Louis is unsure if he is fit for the job.
After saving a girl in an alleyway, Louis remember the releife of helping someone in need. This inspires him to take on the job presented by the king.
Nobody said the job would be safe, and surley, it won't be easy.