Marinate sliced beef in soy sauce, sesame oil, and minced garlic for 10 minutes.
Sear beef in a heavy skillet over high heat until browned and caramelized; remove from heat.
Combine milk and water in a saucepan and bring to a light simmer over medium heat.
Incorporate the ramen seasoning packets and noodles into the simmering liquid.
Cook for 4 minutes, stirring to ensure the noodles are evenly submerged.
Add cheese slices and stir until the emulsion is smooth and the sauce thickens.
Plate the noodles and pour the remaining creamy sauce over them.
Garnish with the grilled beef, soft-boiled egg, green onions, and sesame seeds.