names written in katakana are either a) foreign or b) pseudonyms most of the time, very rarely they'll be used for actual naming over there? rumi is an ex-idol that didn't get popular and forced into retirement yet she keeps the stage name until after? which imo shows she was clinging into her dream all the way until she projected them onto mima

meanwhile mima's name as rare as it is it's written all in kanji and she never drops it for a stage name, which is more usual for idols than actresses? mima's old unit-mates also have their names written in katakana like rumi for example and those 3 are the only ones! which imo kinda shows mima from the start used being an idol as a stepping stone towards her dream of being an idol yknow!!