My Summoned Beast Is the Nine-Tails

Blessed by a goddess, he was born into another world with his memories intact. Now that he was here, his intention was to keep a low profile, but his abilities wouldn't let him.

He has a human body with high-quality chakra.

He has a hidden Mangekyo Sharingan from the start.

It all seems like enough to make him invincible, but somehow, something is missing... Right, he needs a helper! So Yakumo thought, before trying to communicate with the Nine-Tails...