The patriarch dies. Instead of a simple division of assets, he leaves a series of video tapes or letters that reveal secrets: a secret child, a debt, or a "test" for the children. The will isn't about money; it's about the father's final judgment of his kids.
A family business forces estranged siblings to work together. One sibling wants to modernize (sell the company); the other wants to preserve the legacy. This storyline allows you to explore capitalism versus sentimentality. The boardroom becomes the dining room table. My Best JAV collection INCEST- BIG TITS-Family Updates daily
A wedding brings the entire extended family into one room. Alcohol, seating arrangements, and toasts create a powder keg. The drama isn't the ceremony; it's the rehearsal dinner where the divorced parents are forced to dance, or the stepmother tries to walk the bride down the aisle. The patriarch dies