Osa Hannam is an izakaya in Hannam that serves sashimi, robatayaki grilled dishes, fried dishes, and nabe. Its menu includes aged sashimi, futomaki, and spicy minari oden nabe, and it has a terrace and private rooms. The terrace has covers and heating on cold days, and birthday guests are served miyeokguk. Reserved terrace seats have been changed on site or reservations have been cancelled when seats were unavailable.