Mayumi Muroyama
Animeography
Asari-chan: Ai no Marchen Shoujo
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Dororonpa!
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Mr. Pen Pen
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Mr. Pen Pen II
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Asari-chan
Story & Art
Omake no Shibako
Story & ArtAbout
Muroyama Mayumi (室山まゆみ) is the joint penname of Japanese manga artists Muroyama Mayumi (室山真弓, born 1955-08-30) and her younger sister Muroyama Mariko (室山真里子, born 1957-09-27). They made their professional debut in 1976 with Ganbare Aneko in Shoujo Comic. (Source: Wikipedia)