Fire characters in Honkai: Star Rail have a unique relationship together as they can work well in one team. This is thanks to Asta's passive who can buff Fire DMG on top of the fact that Fire characters follow different Paths, completing the team's Synergy. Hook, for example, effectively applies Burn. Now, use Fire Trailblazer as a tank and Himeko that benefits from all that with extra damage against Burned enemies, and players have a decent Fire team in Honkai: Star Rail. Although, of course, people generally would want to include different Elements in the team to handle various opponents.