MTL - Naruto, Make Senju Great Again - Chapter 652

He died on the wedding of the girl he had a crush on, after a long and successful career. After convincing Yama to send him back to the world, he decides to fix the areas in which his life went wrong. Realizing the lack of love and romance in his past life, he sets out to conquer the hearts of various women.

- Description from Novelupdates

Three years ago, the animals and plants on Earth underwent crazy and unexplainable changes that included transformations, reversions, and the addition of otherworldly species. And it was the start of a brand-new type of profession in the new generation of humanity – Monster Trainers, people who specialized in taming monsters.

The story follows Matt, a young man planning to delve the rifts responsible for the monsters that destroyed his city and killed his parents. His dreams are crushed when his Tier 1 Talent is rated as detrimental, and no guild or group will take him.Working at a nearby inn, he meets a mysterious and powerful couple. They give him a chance to join The Path of Ascension, an empire wide race to ascend the Tiers and become living legends.With their recommendation and a stolen skill, Matt begins his journey to the peak of power.

The young lord of a small and weak country saves a dragon beside the sea one day.