Boil water with salt. Add the noodles and boil for 3-4 minutes, make sure to mix to keep the noodles from sticking to each other.
Drain noodles and rinse them vigorously with cold water to remove excess starch and make it chewier. Set aside to drain.
In a bowl, mix gochugaru, gochujang, sugar, apple vinegar, and sesame oil.
Blend garlic, apple, pineapple, soda, and pineapple juice.
Mix the two sauce together.
To serve, put half the noodles in a bowl, put about 5 tbsp of sauce or as much as you like, then top with kimchi, nori, and sesame seeds.
Optional: Top with vegetables like cucumber, lettuce, perilla leaves, and egg.