1boy 1girl animal_ears arm_support blush closed_eyes collarbone cowboy_shot doggystyle drooling flat_chest grabbing grabbing_from_behind greyscale hetero imaizumi_kagerou kazawa_(tonzura-d) loli long_hair monochrome navel nipples open_mouth penis saliva sex sex_from_behind simple_background sketch solo_focus standing tail tears touhou vaginal veins veiny_penis white_background wolf_ears wolf_tail