New York Sushi Ko By Tressa Eaton/June 11, 2013 4:44 pm EST Today is opening day for this 11-seat sushi bar on the Lower East Side. There's no menu; instead, diners choose from omakase meals of three, five and seven courses. Hours here skew late (Mon. to Fri.; 8 p.m. to 2 a.m.). New York Sushi Ko