Eating while walking is a big no-no for most Japanese–even children enjoying an ice cream are often told to sit down before consuming food.
People Also Ask
Sometimes, it is easier to eat alone than making arrangements with other people, and Japanese society has no problem when people are on their own. It is safe and secure, even if you do solitary dining. For Japanese people, eating alone is convenient. They don't have to talk while enjoying their meal.
The reason why tipping can be seen as rude in Japan is because they value dignity and respect much more than tipping. The Japanese believe you are already paying for a good service, so there is no need to pay extra by tipping.