Rule 34 Dev - 2boys 2girls bad_id bad_pixiv_id blue_hair blush flat_color ftmn fukahori_yurika glasses holding_hands kawabuchi_sentarou kneehighs long_hair mukae_ritsuko multiple_boys multiple_girls musical_note nishimi_kaoru over-the-shoulder over_shoulder sakamichi_no_apollon school_uniform socks twintails walking|3456489348