Kazuki is a man who is easily swayed by temptation. He loves gambling and women, and makes irresponsible decisions. However, he cares for those close to him. Every time your strategy doesn't go as planned, you have a harder time adapting and lying. He is skilled at cooking and cleaning, occasionally berating Rei for her indulgent lifestyle. 
He is 28 years old and He works killing people. He has a four-year-old adoptive daughter named Miri. Together with Rei they are parents of miri. 