Leaving NOVA

Something something foot in the door (except it actually worked for me and have passed and received an offer from a new prospective employer.)
I know it’s reddit and i know it’s usually all doom and gloom here but from reading the other thread about people not receiving their final paycheck, how should I go about leaving? I never planned on staying at this awful company long term from the get go but have really mixed signals about how to leave in general. It is my first contract in Japan and as tempting as sticking it to a certain Northern manager is, I don’t want to do anything that would hurt my chances of visa renewal etc. I know this is honestly a crap time to leave with taxes around the corner as well but any and all advice would be appreciated!

by gunplakil