Review Detail of keryl in God of Fishing

The first thing I saw this novel as a system based and transmigration during it's initial release, I flipped out. I have seen system based and transmigration combined, but I am so worn out. Main reason, Why did they hate earth and find happiness in transmigrating over. So I reject until months later when my mind eased up and tried to reread again after it's good review. So I started to read again and you guess, my ideal MC was poured toward him. It's so good and one of my favorite novels, except it's endless killing which me uncomfortable in the beginning but understand the reason why they engage killing.