Brother of Darkness (1994)

Toh is on trial for the brutal murder of his brother, Wah. As the court case unfolds and witnesses take the stand, a horrific tale of sibling abuse, domestic violence and all-round thuggery ensues. A violent attack leads to castration and the end of Toh's relationship with his long-term girlfriend Jenny. Wah is forever after money to finance his gambling and drug addictions. When Toh returns home just in time to rescue Jenny, it is the last straw.