@Le FayOh,
one more thing. I'm not really sure of Japan's acceptance of the religions that use specifically 'Churches' at the time of the RP, or, well, in general. But I have heard that the organized 'western' style religion isn't, like, super accepted/looked on fondly in Japan. Not saying it scrubs the whole backstory/bio/character, but, well, Mokoto's mother would be a heavy outlier, and the original, and secondary, churches would likely see some heavy scrutiny, if not out right discrimination/suspicion.