I'm the Older Cousin (Quick Transmigration)

Being a cousin seems to have a bad reputation. Unfortunately, I'm a cousin, and one with a golden finger, at that. A mighty cousin whose mission is to save his younger cousins. 1. A younger cousin whose parents are both dead 2. A younger cousin with a blood feud to avenge 3. A sickly younger cousin who coughs up blood 4. A younger cousin who becomes empress 5. A widowed younger cousin Theme: You make your own character setting