The Goldfish I Raised Turned Out to Be the Supreme God

Six years after my brother disappeared, the goldfish I raised actually started talking. When I used its power to find my brother, a human eye grew out of my palm. The appearance of a man brought me to a larger world, where everyone has an eye in their palm. It turns out that my goldfish turned out to be the highest god in the world. No system, no intelligence, no harem is not a no-brainer