My Name is Sammy Ichijouji

I'm sammy my big brother is the best person in the world he's also the smartest, one day he started acting really mean and then cold. One day i decided to ask him what was wrong and i got pulled into a new word. This is how i met whats known as a digimon this is how i learned why my brother was so mean. This is how i found out my brother was he digimon emperor