Gather all ingredients and equipment.
Place the water in a pot over high heat.
When the water reaches a boil, add the soba noodles and cook for approximately 5 to 8 minutes, or until soft.
While the noodles are cooking, mix the rice wine vinegar, soy sauce, honey, and sesame seeds in a bowl.
Once the noodles have finished cooking, strain and run noodles under cold water. Set the cooled noodles aside to allow excess water to drain.
Place a large skillet over medium heat and add the sesame oil.
Once the oil is hot, add the the shredded cabbage, carrots, and kale.
Sauté the vegetables until they are tender (about 4 to 5 minutes).
Add the soy sauce mixture and the drained soba noodles to the pan and slightly reduce the heat.
Cook for 1 to 2 minutes, stirring occasionally.
Garnish with the green onions and serve immediately.