A joint pen name of two artists.
Japanese name: ๆฐธๅฑฑ ใใใฎใ (Nagayama Yuunon)
Artist(1): ใใใฎใ (Yuunon)
Artist(2): ้ฃ่ณใใพ (Nagayama)
https://www.pixiv.net/users/43553
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https://www.pixiv.net/stacc/poet0210
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