I have been trying to find this movie for years. I watched it in the 90s and it was one of my favourites. It’s about a young guy (Asian I believe) who goes to America to live with a foster family. The family is great and accepts him like one of their own. Soon after, some guys show up to the house at night and murder the parents, and possibly some of the kids as well, they bring the father out to the front yard and light him on fire. The foster kid and the son of the parents killed then train to kill the guys who murdered their parents. There is a scene where a funeral is held on a boat and that’s when the two guys decide to get revenge. There is also another scene of training on the beach and the last fighting scene takes place outside.

If anyone has any ideas please post! Thanks!