Ichiu is a Japanese restaurant in Nihonbashi Hongokucho led by Chef Koichi Hamano. Over the course of his career, Chef Hamano refined his skills in both Japanese cuisine and sushi at acclaimed Japanese and sushi restaurants, including Michelin‑starred establishments.

At the heart of his cuisine are traditional Japanese techniques and seasonal ingredients. While respecting the fundamentals of classic Japanese cooking, he takes a flexible approach, adding subtle creativity and playful touches without being bound by convention. The omakase menu features a variety of dishes tailored to the ingredients of the day, from seasonal small plates to sushi, all accompanied by a carefully curated selection of sake and other beverages sourced from across Japan.

The name “Ichiu” means “a single house.” True to its name, the restaurant offers a warm and welcoming atmosphere reminiscent of a private home. An L‑shaped counter and open kitchen allow guests to watch the chefs at work while enjoying food and conversation in a relaxed setting.

In the comfortable surroundings of Nihonbashi Hongokucho, savor seasonal Japanese cuisine and carefully selected drinks at a leisurely pace.

• Price Range:

  Lunch: USD 75.86 - USD 75.86
  Dinner: USD 104.31 - USD 164.37

• Dietary restrictions / Allergies:

  If you have any specific food allergies or ingredients you cannot consume, please inform us in advance. Unfortunately, we cannot accept reservations if there are ingredients that you cannot eat within a wide range. We do not accept reservations from guests who cannot eat raw fish. Please note that if "no raw fish" is indicated under dietary restrictions, your reservation may be automatically cancelled.

• Arrival time:

  Please arrive 5 minutes before your reserved time to ensure a timely start of your meal. If you do not contact us and exceed your reservation time, it will be automatically canceled.

• Dress Code:

  Dress code is smart casual (Please refrain from wearing T-shirts, shorts, and sandals when you visit.)

• Children:

  Only those who can enjoy the same course as adults are allowed.

• Others:

  We kindly ask for your consideration regarding excessive perfume or fabric softener fragrances.

  Korean-speaking staff are available.