absurdres baseball_cap black_blood_cell black_eyes black_hair close-up contrast dark_persona hair_over_one_eye hat hataraku_saibou head_tilt highres looking_at_viewer male_focus minal_(minarr) multiple_boys pale_skin smile smirk smug two-tone_background u-1146 white_blood_cell_(hataraku_saibou) white_eyes white_hair