Sci-Fi Apocalypse: Black Pupil

Before the end, he stockpiled tens of billions of supplies and owned a free black technology kingdom! After the apocalypse, he accidentally discovered a shocking secret hidden in the mental hospital! His awakening of powers has also made him the "Public Enemy Number One" of the Western Gods. So he got angry! He led the Eastern Gods, wielded his sword gracefully, and penetrated the Western God Realm. The wind picks up again, and the night becomes as cold as water again. He travels freely through space and time, and dives into the deepest part of the universe...