The Apocalypse Angler's Revenge

Ocean swallows cities. In his past life, Luke saved his girlfriend and brother, only to be betrayed and pushed into sharks to die. Reborn at the apocalypse, he cuts off old ties and binds to a God-Tier Fishing Rod, allowing him to fish for anything, upgrade his vehicle, and build a survival boat. Starting from a raft, Luke rises in the ocean apocalypse, seeking a blood debt from all who betrayed him.