Koto Japanese Steak House is an award-winning exercise in lunch and dinner served seven days a week. They feature a full bar with happy hour and an expansive menu of rolls, fresh sushi and sashimi, traditional Japanese dishes and flaming hibachi favorites. The restaurant also offers a private event room for up to 36 guests with separate hibachi tables, with the entire restaurant available to rent for larger groups in advance as well. Catering services are available. Visit at 527 Long Hill Road, Groton.