Thank you Veen for your answer.
But I have not succeeded yet in the way of using the same Unicode number.
In my PC environment, other things to be done may exist due to MM4.1, I think.
$CharacterEncoding is "ShiftJIS" in my MM4.1,
so I tried like the below:
Cell[FromCharacterCode[16^^e000],"OutPut",
CharacterEncoding?"Unicode"]//DisplayForm,
of course, 16^^e000 was registered in Unicode, but failed.
Regards,
ichione