1girl aqua_eyes aqua_hair bangs blood blue_hair blue_neckerchief blue_sailor_collar blunt_bangs blush bob_cut chibikki colored_inner_hair dot_nose halo hand_up holding long_sleeves looking_at_viewer multicolored_hair nanako_(chibikki) neckerchief open_mouth original pink_blood pixel_art razor_blade sailor_collar school_uniform self_harm serafuku short_hair simple_background solo two-tone_hair white_background white_serafuku wrist_cutting