2girls 4koma bad_id bad_pixiv_id bed blush clock closed_eyes comic covering_mouth eye_contact flying_sweatdrops greyscale hetero iijima_kana looking_at_another lying monochrome mother_and_son multiple_girls on_back open_door sweat sweatdrop translated tsurezure_children uchimura_chiaki uchimura_keiko under_covers wakabayashi_toshiya