Every new Chapter of Fortnite includes a new loot pool with new weapons and items and new perks and drawbacks. Every Fortnite player will likely have a favorite item and loadout each season that reflects their unique playstyle. Fortnite has introduced almost all new weapons and items this season, some of which directly tie to the Japanese theme of Chapter 6, Season 1. The newly added items include two Assault Rifles, three Shotguns, two SMGs, two Oni Masks, and one new melee weapon.

https://screenrant.com/fortnite-chapter-6-season-1-best-weapons/