![1girl bangs bed_sheet blue_ribbon breasts flower garter_straps ginhyou_no_brynhildr_sokoku_bouei_no_tae_saikyou_no_sen_otome_ga_yome_ni_narimashita hair_flower hair_ornament hair_ribbon highres holding_polearm lance large_breasts long_hair looking_at_viewer lying miniskirt mutsutake nipples novel_illustration official_art on_side open_mouth polearm purple_eyes purple_flower purple_legwear purple_skirt pussy_juice ribbon silver_hair skirt skirt_lift solo thighhighs very_long_hair weapon rating:q score:6 post #3758655](/cdn_image/preview/e8/34/e83486fb92a044b02fd12d3da8cb0edb.jpg)
Artist.
Japanese name: 睦茸 (ムツタケ, Mutsutake)
Old name: 無月 (Mugetsuki)
Circle & site name: 怨床 (pronounced as Onshou, spelled as ON-SHOW) (Circle partner: Ishibashi Shingo)
This artist seems to be Mutsutake's Cookie_(Touhou)-themed account:
Name: のこのこ (Nokonoko)