Eat Melon System, My Sister and I Broke into a Harem

When the best friend who is the best in eating melons is bound to the [Omniscient Meal Eating System], and the best friend with incredible strength is bound to the [Iron Fist of Justice System], the two of them enter the same sadistic novel, one is responsible for digging up melons and breaking the news, and the other is responsible for physical salvation, turning the ancient harem into a large melon-eating live broadcast room.