Prepare the Tare: Combine Marudaizu Koikuchi Shoyu and Hon Mirin. Let sit at room temperature for one week. After a week, add kombu and shiitake mushrooms and let steep overnight. Heat to 80°C, remove kombu and shiitake, add sea salt, let dissolve, cool to room temperature, and add Thai fish sauce.
Make the Chicken Stock: Prepare chicken and chicken feet, add to pot with water, bring to a boil, skim off scum, add chicken skin, simmer at 95°C for 6-12 hours. Strain.
Prepare the Dashi: Soak kombu and shiitake in water overnight. Heat to 60°C, remove kombu and shiitake, bring to 90°C, add katsuobushi, steep, and strain.
Make the Shallot Oil: Fry shallots, ginger, garlic, and green onions in vegetable oil until almost burned. Strain to make the oil.
Assemble the Ramen Bowl: Combine dashi, chicken stock, tare, and chiyu in a bowl. Add cooked noodles, toppings, and shallot oil.