1boy 1girl absurdres ae-3803 bad_id bad_pixiv_id belt black_shirt blue_shorts blush cabbie_hat colored_skin couple denim denim_shorts eye_contact from_side gloves grey_gloves grey_hair grey_hat grey_jacket grey_pants hat hataraku_saibou hetero highres invisible_chair jacket kenkaizar kneeling knife looking_at_another open_clothes open_jacket open_mouth pants red_blood_cell_(hataraku_saibou) red_hair red_jacket sheath sheathed shirt short_hair short_shorts short_sleeves shorts sidelocks simple_background sitting thigh_strap u-1146 white_background white_blood_cell_(hataraku_saibou) white_gloves white_skin yellow_eyes