Come to Infinity and Sacrifice to Me

Arriving in the world of God Slayer, the cheat code turns out to be a relationship development system. Is there something wrong? Luckily, I have a special ability similar to "equivalent exchange." After sacrificing my own name, perhaps I can impersonate an Outer God? Incarnated as the Last King in God Slayer, I became the ruler of the celestial realm at Demon High School, the most powerful god among gods, and handed over a divine contract in the Demon Garden... This is a story of a god born to be a god, who, after failing in his struggles abroad, must return to inherit the multiverse.