Shinwa Densetsu no Eiyuu no Isekaitan - Volume 7, Chapter 2 – Holding Hope And Sunk In Sorrow, Part 3

Bought it right away.

In a bizarre twist of fate, Damien, an ordinary man from our world, finds himself inexplicably transported to a medieval fantasy realm. But this is not a simple tale of displacement; Damien undergoes a profound transformation, awakening as Logan, a wolf beastman and the destined heir to the chieftainship of the wolf beastmen Tribe.As Logan, he inherits not just a new form but a complex legacy of power and ambition, underpinned by the dreams of his tribe to elevate their leader to the divine status of a wolf deity. His transformation is accompanied by the mystical Tribal Chief System, a potent force that endows him with extraordinary knowledge and abilities, elevating his potential far beyond any ordinary beastman.The story intensifies when Logan’s father, the revered chief of the beastmen Silvermane, perishes in battle. This tragedy thrusts Logan into a leadership role much sooner than anticipated. As the new chief, he must navigate a world rife with dangers—both from rival tribes jealous of the Silvermane's prosperity and darker forces that threaten the mystical balance of the realm.Logan's ascent to power is an arduous journey of personal growth and leadership. He must harness his new abilities to outmaneuver his enemies, solidify his tribe's standing, and forge crucial alliances. The Tribal Chief System guides him, offering strategies and powers that could dictate the future of his people.

After breaking up with his girlfriend, he accidentally acquired a genius system and rose from there against the heavens, becoming invincible..

- Description from Novelupdates

Waking up, I discovered that I had become a cat with superpowers...