Island Survival, Starting Awakening Sign-In System

The parallel world travels across the world to an endless sea. There are small islands in the sea. Everyone relies on fishing rods to catch supplies and engage in a fierce sea battle for hegemony. The protagonist gets a sign-in system at the beginning, and how will he survive based on this system? Stay tuned! ! ! ! ! ! ! ! ! ! ! ! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.