Prehistoric: Upgrade to God

Otaku is reborn against the will of heaven and unable to practice? No skills? There is a spiritual weapon upgrade system, and there is no common sense in breaking through the realm. The alchemist who was killed by the elixir, the pet who threatened his owner, and the brother who accidentally tricked the protagonist to death Pet: What, I'm arrogant? That's because you haven't seen my master. You'll know when you see him... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.