Reborn into Naruto World with Tenseigan - Chapter 614 - Kuroto’s Hypothesis

Lyle Walt is a young noble boy and heir looking forward to the day he can inherit his family’s territory. Except around when he was 10 year old, his parents started neglecting him more and more in favour of his little sister, Celes.
On his fifteenth birthday, he is challenged to a duel by his sister to see who will inherit the household and horribly loses, being cast out of his family. Afterwards, he gets treated by the family groundskeepers and receives the family heirloom Gem from him that Lyle’s grandfather had entrusted to him. From there, he begins an aimless journey with his childhood friend and former fiancée, Novem, and the Gem-turned-Jewel that houses the memories, personalities, and Skills of seven of his ancestors.

To everyone in the Full Moon Pack, Hailee Stones was just an omega, the quiet daughter of the pack house cook. No one ever guessed she was more than that. As an omega, she was often overlooked, belittled, and disrespected, especially by Nathan, the Alpha’s son. He always singled her out, teasing and tormenting her in ways she couldn’t understand. Why did he bother to notice someone like her at all?Everything began to change when Callum, the Alpha heir of the Nightshade Pack, transferred to Moonridge Academy to finish his final year. The school was located in Full Moon Pack territory, and Hailee was surprisingly chosen to be his guide.But they weren’t the only ones to cross paths. Nathan's cousin, Dane, the charming and mysterious Beta heir of the Snowmoon Pack, known for always getting what he wanted, also took a sudden interest in her. Dane, who had never glanced twice at an omega before, seemed drawn to the fiery girl who refused to bow her head.Things escalated quickly.Soon, all three young heirs, Nathan, Callum, and Dane, were fighting for her attention. The tension between them grew unbearable, and Hailee was caught in the middle, torn and confused by her feelings for each of them.Then, just a week before her eighteenth birthday, everything changed.Hailee slept with all three of them… on the very same day.And the very next morning, she vanished without a trace.Ten years later, Hailee returned to the Full Moon Pack. But she wasn’t alone.She came back with three boys, triplets, each bearing a startling resemblance to one of the men she had left behind.Now Nathan, Callum, and Dane each claim that at least one of the boys is their son, if not all three.As for Hailee? She has no idea who the true father or fathers are.

In the rebirth, in order to prevent the tragedy of the previous life from happening, Bai Yu decided to rush to the [Tower of God] at any cost, and face everything together with his sister!

However, Bai Yu, who was bound by the system, mutated his bloodline, and transformed into a black-scaled python seems to be developing on a completely different path from his previous life…

- Description from novelbuddy

The formless ancient world was infested with despicable demons. They hunted and feasted on mankind, keeping the human civilization constantly in a weak and suppressed state.

During the first known year, a magical mountain descended into the world from the realm of the Gods. Carved on this enormous mountain was a message: ‘Heaven Prevails’…

After the Grand Descent, a name that was given to the descending of the mountain, the Three Great Sages made their ways to Mystic Mountain where they learned to harvest what we now call magic, establishing the Mystic Cults and eighty-one sacred shrines to help aid mankind with the cult’s mystic powers against the eternal fight to the death with demons.

- Description from Novelupdates