Mix the soy sauce with the sesame oil, lime juice and half of balsamic vinegar. Put aside.
Cook the noodles according to the packet’s instructions, then rinse with cold water and drain. When completely cooled, transfer it to a large bowl and mix the it with the dressing.
Heat the oil and fry the tomatoes for 3-4 minutes. Add the remaining balsamic vinegar, sugar and mint leaves. Caramelise it for about a minute.Take it off the heat and let it cool, then add to the noodles and gently combine.
Scatter the sesame seeds on top just before serving.