Rule 34 Dev - 2boys aqua_eyes aqua_hair black_hair blanket blush brothers closed_eyes crying futon hana_ni_nare highres indoors kimetsu_no_yaiba lightning long_hair male_focus multicolored_hair multiple_boys night parted_lips rain scared siblings signature sleeping tears tokitou_muichirou tokitou_yuichirou twins under_covers|24802729029