I'm Not Brave (2010)

Deokjun is a Korean-Chinese who came to Korea to earn money. He does menial jobs that have never been done in China, but things don't go as well as he hoped. In the end, he takes hostages in the supermarket, and the owner's daughter Jeong-in, who visits the supermarket, becomes hostage in place of her mother and grandmother. Jeong-eun is heartbroken by Deok-joon's difficult story, but her own situation is not good as she is a child born from a relationship with her immature boyfriend. (2014 18th Bucheon International Fantastic Film Festival)

Unfortunately the movie I'm Not Brave is not yet available on HBO Max.