The New Adventurer's Starter Kit includes:
- Early unlock for Rimu-Burger and Curry-Muru building types
- 3,000GD which can be used to construct buildings
- 3,000GP which can be used to boost character abilities

More details on the official game page of That Time I Got Reincarnated as a Slime ISEKAI Chronicles - New Adventurer's Starter Kit ...