Shujinkou ja Nai!, Katainaka no Ossan, Kensei ni Naru: Tada no Inaka no Kenjutsu Shihan Datta noni, Taisei shita Deshi-tachi ga Ore wo Houttekurenai Ken Recommendations
both of them played by old man in other world, instead going to cringe way, they acted more like a guardian for newbie and guide them to become the best adventurer
