It is highly likely this is either a misspelling, a very obscure indie creator, or a confusion of two separate names.
Searching for (surname Mame, first name Hitomi) yields no results in professional acting, singing, or directing. This name does not appear in Japanese talent agency rosters. hitomi mame
While there is no single official manual titled " Hitomi Mame — Develop Guide It is highly likely this is either a