Flowers in the Shadow (2008)

Shinya is in debt as a result of his gambling habit. He attempts to defraud an old woman with a bank transfer scam, but the woman reminds him of his late mother and they start to relate to each other. Meanwhile, Shinya meets a girl called Hisako in town, and ends up helping her to find out the whereabouts of an unsuccessful comedian, Raita, whom her mother was in love with in her youth. Shinya's father, Ryutaro, is disowned by his son after his wife's death. When Ryutaro meets a homeless man called Moses, he starts living on the street as well. One day when the old woman dies, Moses comes to the deceased and confesses his past. Subsequently Shinya resumes communicating with his father Ryutaro.

Unfortunately the movie Flowers in the Shadow is not yet available on HBO Max.