so, i actually don't know if these dramas are in your category..
i think at least 1 woman in the drama acting cute..
it's typical japanese girls.. :P
but let me try..
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watashi ga renai dekinai riyuu..it's romance..of 3 girls..but no one think that they're always right..and they're not a kind of cute-noisy-girls :D
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hotaru no hikari and
its sequel.. also romance..the girl is so clumsy..not really think about love..
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IS.. about someone who has 2 sexes, named haru..haru was a boy, but changing as a girl..not because she wants to, but because of the body condition..also has romance in it..
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Last Friends..about a girl that has a boyfriend that always hit her..then she met her high school friend, and start to move in her share-house..we can call it kind of dark-romance..
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Brother Beat..it's a family comedy drama..about 3 boys and their mom..also has romace for each son
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11 nin mo iru..also a comedy family drama
well,,i think most of dark romance drama also in your category..like soredemo ikite yuku, sunao ni naretakute, innocent love..something like that...or if you want a sad one,,you can also try daisuki..