(TrendHunter.com) The Burger King Japan Guilty Butter Burgers have been announced by the brand to offer patrons with a way to indulge in a range of premium, flavor-focused menu items. The burgers come in the form of... (TrendHunter.com) The Burger King Japan Guilty Butter Burgers have been announced by the brand to offer patrons with a way to indulge in a range of premium, flavor-focused menu items. The burgers come in the form of...