Notorious are the Japanese when it comes to learning languages, even though there is a fairly large language education market in Japan. A lot of lay Japanese people want to learn a language like English from a native speaker of it because they believe that a native speaker must be an expert and that must be the best solution. It is fine if they want it that way as long as it motivates them, but there is something that they never think about: what exactly is a native speaker? In applied linguistics, it is widely accepted that a native speaker of a language is someone who acquired the language at an early age from people like his/her parents, who take care of the person. A native language is often called an L1 if that is the person's dominant language. There are also L2, L3,..., and Ln if the person has acquired more than a language. An L2 is one's second most dominant language, and an L3 is one's third most dominant language, and so it goes on.