Saikyou no Shienshoku “Wajutsushi” de Aru Ore wa Sekai Saikyou Clan wo Shitagaeru S01

Noel longs to be like his legendary grandfather, a "seeker" who destroys monsters emerging from "black holes" and reaches distant lands. Unfortunately, he is only a "speaker"; a class with no combat skills. However, Noel does not lose hope and decides to form the strongest group in the entire land; using his oratory skills, he unites professional killers and powerful heroes under his leadership banner.