As a Reincarnated Aristocrat, I'll Use My Appraisal Skill to Rise in the World 5 (Manga) - Natsumi Inoue - Bog

It's brains over brawn in this new isekai adventure! One day when leaving work, a salaryman dies and is reborn in another world as the weak child of the noble Louvent family. Using his "appraisal" skill, which lets him see the stats of others, young Ars Louvent recruits the best people to his side in order to turn his country around. MISDIRECTIONAs the new baron of Lamberg, Ars vows to honor his late father's wishes by siding with Prince Couran in the war of succession, even as the nearby county of Plena backs Couran's younger brother, Prince Vasmarque. When Ars's spy intercepts a document suggesting that one of Lamberg's allies is colluding with Plena, House Louvent's plans are thrown into disarray. Could there be more to the situation than meets the eye?