Yes, individuals do go to izakaya by themselves. However, dining alone may be more expensive because the food is typically intended to be shared and the portions are large. When entering an izakaya alone, the number of individuals in your party will be asked. If the person is unable to communicate in Japanese, they can easily show the number on their fingers. Although some people are hesitant to visit an izakaya alone, others do not mind and see it as a chance to eat where they want without allowing others to dictate their choices.