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Artist.
Japanese name: γ½γ (Poru)
Old names: γͺγΌγγ (Naasan), "na-san" or "masa"
See also
- Pixiv account: http://www.pixiv.net/member.php?id=6515792
- Niconico account: http://www.nicovideo.jp/user/5075425
- Niconico Seiga: http://seiga.nicovideo.jp/user/illust/5075425