Saikyou no Shien-shoku [Wajutsushi] Dearu Ore wa Sekai Saikyou Clan wo Shitagaeru

Noel is the grandson of legendary Seeker Overdeath and dreams of surpassing his strength. But it turns out that Noel is nothing but a Talker, the weakest class of them all. Undeterred, he uses his silver tongue to gather allies, develop cunning strategies, and form the greatest clan around. Now, as the most notorious Talker, Noel will do whatever it takes to claim supremacy.

(Source: Crunchyroll)