Digimon World Dawn and Dusk

The beggining of Digimon World Dusk Starting out in Thriller Ruins, you go out training for the Normal Tornument. Suddenly, Vilemon attack, but you quickly make disposal of them. The next day, you go to the Normal tornument. Your opponent is Koh of Light Fang. You beat him. At the DigiColliseum entrance, something like a Phantomon without a sickle appears. I dissappers after that.

The beggining of digimon World Dawn here (I don't know a single thing about Dawn, only Dusk.)