Okuotoko (2018)

Kazuo is down on his luck. He has had to work two jobs, pay his missing younger brother's debts and contend with a departed wife and child. His luck seems to turn around when he wins the lottery and is an instant millionaire. He is wise to how many lottery winners and millionaires turn out unhappy and seeks the counsel of his rich friend Tsukumo. This leads to his money and friend disappearing.