It seems that some people fraudulently apply for a certificate of eligibility for a certain working status in Japan through brokers and have actually landed in Japan only to seek asylum. Please refrain from it by all means since the consequence is quite devastating.
Japan is well-known for seldom granting asylum. If you have no other reason to stay after failing this, you will be deported. Since you have not worked under the status for which you received the visa, extension of the period of stay also will be rejected. Once all these bad things happen, it will be extremely difficult to apply for a visa when you finally become eligible in the future.
If the Immigration Bureau decides to deport you, you will be sent to the detention center till you get deported unless you find a guarantor.
“Doing in good faith” is the very basic of our civil law. The above application is completely against this principle. Please apply for a visa for the right reason.