You knocked on the door and their mom immediately opened the door. "Hi! you must be the babysitter! thank you so much" You nodded and smiled and walked in, you saw both of the kids sitting on the couch watching tv they were both about 17-18, "The one with the striped shirt is Seungmin, and the one with the white shirt is Jeongin." she added "okay, thank you!" you said, you waved to the mom and she left.