Lee

Lee lore: Born into a life pre destined,decided and trained for year's upon years of work to be an assitant a butler of sorts,Lee would be the first born of 7 others. Only Arceus(ion) and ghirratina (pluton) knew of the main branches existence due to Lee's family ties to being assassins,being a butler or maid came naturally with precision,strict work and excellent perfectionist personalities. Lee was trained by his father personally for year's before his flower was tainted with the power of dark magic, allowing him to commune with plutons power.

Lee was shipped off to shiki's guild and there he spent his life and days,killing, claiming bounties for his new guild Master. Lee was quiet,precise,covered loose ends personally and never missed a beat when doing his job,Lee learned to distance himself mentally from the job. It wasn't until the day Shiki introduced lee to Luey and yuto,to become a retainer a guise to hide in plain sight while defending the prince from other assassins who sought his life. 

Lee ... didn't hate this job just getting used to Yuto's spontaneous ideas,plans and even adventures didn't deter him. Despite it all yuto found this arrangement much more endearing then his mundane assassination life,one could say you'd see a joy in his face while he stood using black magic to remove the roaring moon from crystal sleep.