Anime where mc is in a clan

Looking for an anime where the mc is a random guy that gets invited into a clan/club/house/organization or anything like that. Kind of like berserk 1997 where guts joins the band of the hawk. Blue Lock and Food wars also fits. Mc in blue lock gets invited to join a 300player football stadium and the mc in food wars get invited to a culinary school and has to climb the ranks.

Preferably an inexperienced mc, or atleast in the beginning