Hi, Wish! I'm chiming in on this one as a trans guy.
I really like how very little about his profile is focused on the fact that he's transgender--he's a very good character! I just wanted to ask that you change some of the terminology in use. "Female to male" was in vogue at the time of your original posting, but since then it has been considered to emphasize dysphoric thought. The more thoughtful way to indicate that your character's socialization doesn't match their experienced gender is to say they're "assigned female at birth". While Kizoku obviously may choose to refer to his specific circumstances as female-to-male, you should give that careful consideration--how open is he regarding his gender identity, how comfortable he is regarding his initial socialization as someone coded 'female', things like that--and remember that his choices will reflect your views and may influence the views of others who do not know a transgender person! When playing a minority character, it's important to be aware of stereotypes surrounding your character and take steps to avoid falling into them.
In addition, if binding ever comes up, please be aware of
safe binding practices. Please please
please don't have Kizoku wearing ace bandages to bind, or using duct tape, or wearing multiple binders at once. This is very dangerous, and while again, he can make this choice, this reflects your opinion on trans people so you need to be careful.
Finally, if you choose to cover Kizoku's continuing transition, please do some research into the WPATH standards of care for transition and informed consent. It is an endemic problem that people assume that hormones, driver's license changes, and surgery can be done as quickly as six months from a character coming to terms with their gender identity. This is not so. While informed consent can greatly cut down the wait times involved, this only really became a thing within the past five or six years. If Kizoku has been on hormones, it is likely he was on puberty blockers first, after at least two years of therapy and with separate recommendations from a psychologist and a psychiatrist. Even today, you are required to have two separate recommendations from psychiatrists and psychologists specifically focused on transgender oriented treatment in order to qualify for gender confirmation surgery. While it is possible to find psychiatrists/psychologists who will do informed consent for surgery as well, plastic surgeons who will perform gender confirmation surgery often require at least a year living as your experienced gender. These operations are not usually covered under health insurance unless they accompany a diagnosis of gender-based dysphoric disorder, so keep that in mind too. Changing the gender shown on your license requires proof of surgery in most states, if it's even allowed--it isn't in about 28-30 states in the union.
If you have any questions, I am around, and you can feel free to PM me--I also have AIM (hencethefortress) and Skype (knightshadeisabatmanexpy). Good luck getting Kizoku!