Listening to 80s aidoru Maiko Okamoto（岡本舞子）, and this is her 2nd article on "Kayo Kyoku Plus", I'm coming to the conclusion that it's too bad that her career was very short...only going from 1984 to 1987. But that's the way the aidoru business bounced back then, I guess.
Being the melody guy and a Yamakawa fan, I really like the music for "Romantic ga Monotarinai" which kinda elevates the song a bit further up from the usual aidoru tune. It starts off with something reminiscent of Hideki Saijo's（西城秀樹）"Young Man"（ヤングマン）and then goes into this amiably bouncy pop which reminds me more of a creation by EPO.
Looking at Aku's lyrics, I'm not totally sure on my interpretation but I believe that they are relating a tale of a young woman who's envious of the surrounding lovey-dovey couple action but still wants something deeper than all that wooing. I guess the lyrics might be somewhat EPO-esque themselves. In any case, the album "Heart no Tobira" managed to get as high as No. 65 on the Oricon weeklies.