Japanese Language School for 6 months

Hello everybody,

I want to ask if someone have attended to a Japanese Language School requesting a just 6 months visa? and also how much money were you requested to have for the proof of funds?

I'm looking for a school primarily in Tokyo, and it looks like they usually expect you to enroll and pay for one year in advance, so I'm asking to have a little more of context to where should I look into.

In case is relevant I've already have the N4 certificate of JLPT, and both a bachelor and a masters degree. My plan is to move to Tokyo and improve my language skills and in case I like the city I'll look for a job in IT.

by _Python_Sun