Inexplicably Involved in the Dispute

A person inexplicably activated dual systems. He was very happy from the beginning because he was the chosen one recently, but he didn't know that from the beginning, he was a yin. He didn't even know about the system. How should they choose in the future? But what does it have to do with the protagonist? After all, he discovered that the system had a god-level function. He wanted to keep it secret for now and think about it later. Should he add it to the system? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.