I have a long essay about artists who jump between manga & galleries in the new Comics Journal. One of the artists, Aya TAKANO, works as a part of KaiKai Kiki, the group organized by Takashi MURAKAMI. Their web page has a profile of her work.
Her work has been covered in a variety of English-language publications, like Art Asia Pacific.
At least two English-language books contain her work. Little Boy: The Arts of Japan’s Exploding Subculture by Takashi Murakami, has (very) brief coverage in his longer essay on things otaku. Easier to find, Drop Dead Cute by Ivan Vartanian also features her work. I wouldn’t put too much stock in Vartanian’s organizing principle– “cute works by women artists”– especially since, say, Tabaimo’s work is neither cute nor anything like Takano’s. But the artists & works he selects stand on their own merits.