1boy, 1girl, back, blue hair, blush, bottomless, closed eyes, commentary request, finger to mouth, girl on top, hat, hat removed, headwear removed, hetero, hinanawi tenshi, long hair, open mouth, reverse cowgirl position, sex, sex from behind, shirosuzu, solo focus, straddling, touhou, trembling
1boy, 1girl, back, blue hair, blush, bottomless, closed eyes, commentary request, finger to mouth, girl on top, hat, hat removed, headwear removed, hetero, hinanawi tenshi, long hair, open mouth, reverse cowgirl position, sex, sex from behind, shirosuzu, solo focus, straddling, touhou, trembling