Series: Touhou - How Did She Find Out!! (Ikki3nomi)

Artist: Ikki3nomi
Original title: なんでバレたのよ！！ (Nande Bareta no yo!!)
Gallery: https://e-hentai.org/g/1643478/6aef085447/
Pairing: Reimu x Marisa (ReiMari)