Moto Saikyo Tansakusha no Ojisan. Bishojo Haishinsha o Tasukete Obazuri Shite Shimatta

After losing his job, a middle-aged man turns to monster hunting in dangerous dungeons to survive. During one expedition, he rescues a stunning high school dungeon livestreamer. Seeing his exceptional combat skills as the perfect way to grow her audience, she suggests they partner up. The unlikely duo begins producing intense, action-packed dungeon content together—unaware that even greater challenges await.