Series: Touhou - Monochrome of Days Gone By (Mikagami Hiyori)

Artist: Mikagami Hiyori
Original title: 過ぎし日のモノクローム
Gallery: https://e-hentai.org/g/1370254/87c9d2f7f8/
Pairing: Reimu x Marisa (ReiMari)