BNB inverse-native bridge is used to relay the BNB native token between Binance Smart Chain (BSC) and Fuse networks
This bridge is two layer bridge. In the base level the Arbitrary Message Bridge (AMB) is responsible for relaying messages between the networks. On top of the AMB, the pluggable mediators implement a contract logic of token relaying of various assets. More info https://docs.tokenbridge.net/amb-bridge/about-amb-bridge
The contract is called an "inverse-native" bridge, because the home and foreign network are inversed. In that case Fuse network is foreign and BSC is the home network.