4boys ? aislan antenna_hair arms_at_sides bare_arms black_eyes black_footwear black_hair black_shorts black_socks black_sweater_vest black_tank_top black_thighhighs bright_pupils brown_shorts closed_mouth collarbone colored_skin expressionless flying_sweatdrops full_body hair_behind_ear hair_between_eyes hand_on_own_arm hands_on_another's_shoulders highres holding holding_knife kneehighs knife looking_at_another multiple_boys multiple_persona no_pupils no_shoes omori omori_(omori) omoriboy parted_lips prototype_design shadow shirt short_hair short_sleeves shorts sleeveless socks spoken_squiggle squiggle standing striped_clothes striped_shorts sunny_(omori) sweatdrop sweater_vest tank_top thigh-highs vertical-striped_clothes vertical-striped_shorts walking white_background white_pupils white_shirt white_shorts white_skin white_socks