Do you know Ricardo Cruz's Nihongo Premium course? 

Ricardo Cruz is a successful Brazilian singer in Japan who has even opened for anime such as One-Punch Man. He currently also teaches his followers the Japanese language for free and also offers a full paid course that teaches using anime and Japanese POP culture. 

He also runs a free event before launching his class for the online course. In this event he presents several complete classes to help you learn Japanese! If you want to participate, just click on the banner below: