Sushi Raian is a sushi omakase restaurant near Fukushima Station in Osaka that serves aged hoe and aged sushi. In each course, the chef explains the ingredients and the food and makes the sushi in front of the diners. A course takes about 2 hours to 2 hours 20 minutes, and same-day reservations are not accepted, so a phone reservation is required. The restaurant seats about 10 people.