2boys bangs black_hair blue_eyes blue_eyesglasses bow bowtie breasts cardigan collared_shirt green_hair green_shirt hibiki_yuuta long_hair long_sleeves male_focus medium_breasts multiple_boys open_clothes open_shirt red_bow red_hair red_neckwear school_uniform shirt short_hair short_sleeves ssss.gridman sweater utsumi_shou waistcoat white_cardigan white_shirt white_sweater wing_collar