The supporting character's harem is very normal - Chapter 142 Lathel and Charlotte.

Travel through the world of Naruto and become an insignificant member of the Uchiha clan.

“Although I am insignificant, my heart is also toward the sky!”

Our goal is to fly side by side with Kaguya Otsutsuki!

- Description from novelbuddy

The Blue Star connects countless realms, and martial arts enable one to dominate multiple realms. Jiang Ming awakened the Martial Arts Talent System. With each realm he advances, he is bestowed with an ultimate talent: A Hundredfold Comprehension, Mastery of Souls, Spatial Illusions, Sacred Body, and so on. This is an era of martial arts prosperity, with only seven days left until the Federation's martial examination. The entire populace is in a frenzy of preparing for the martial examination. Jiang Ming is like an untamed wild horse, rushing through multiple realms, myriad battlefields, and the vast universe...

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The empire had called him a villain, now they raise him as their heir.Once feared as the most powerful being alive, the so-called “Villain of Chaos” was brought down by the very heroes who craved his artifact. Now, he’s been reborn into the very home that had killed him in the name of cleansing the world. In a royal court ruled by lies and power games, he is no longer the demon to be feared… yet. His mother concealed his identity on the day he was born, and a river of blood flowed for his sakeNow he will learn how to pull the strings in court as its prince, and train to ascend the throne and become the most powerful mage the empire has ever seen.The world thinks it killed him. It only gave him a reason to return.