Shui Jian and Akuma Daiichi

So one of my SO's is crazy for mafia style roleplay so we made one centered in Daiichi, son of a very important Yakuza chief, and Shui Jian, his bodyguard. Well, his nanny actually since he makes sure Daiichi's inexistent sense of self-preservation doesn't kill him. The kid is so violent people usually call him Akuma Daiichi (demon Daiichi)