Blanch the bean sprouts for 20 seconds in lightly salted, boiling water. Drain and set aside.
In a large stir fry pan, saute the garlic in a small amount of oil over medium heat for 1 to 1-1/2 minutes (don't brown). Add the pork and stir fry. As the pork is cooking, add a small splash of sake to coat the pork lightly and a small heaping spoonful of sugar. Cook until the pork is mostly done.
Add the garlic chives (nira) and carrots and a small amount of soy sauce. Continue to stir fry at a slow to medium sizzle (medium heat) until combined.
Add the bean sprouts and continue to cook stirring occasionally for 5-10 minutes until the bean sprouts are done (they should be just a little crisp). Season with salt and pepper (to taste) and a little more soy sauce if desired.
Just before serving, add the ground sesame seeds (you can use whole sesame seeds if you want to be lazy). Serve with white rice.