The Demonic Path (High School Dxd x Male oc)

After getting reborn to 500 years from the past, climbing up towards the pinnacle of eternal life, eventually reaching it and succeeding, the chaotic demon himself, Fang Yuan, for the first time in his life, experiences boredom. After attaining eternal life, he no longer has any interest nor goals to achieve. He has grown accustom to his path yet he yearns for more. The Spring Autumn Cicada hears his calling, and eventually, the time traveling demon makes his move once again but rather than the past, he is sent to a whole new different timeline where Gu, the essence of power and life itself, does not exist. But rather than mope, he instead lets out a cold shrilling laugh that gives a strong eery vibe.

Devils? Angels? Gods?

How will the supernatural world react to the coming of a demon that laid ruin towards the whole universe countless times?