Mix ingredients 1 to 5 in a large bowl. Whisk the mixture until the sugar is dissolve.
Add in the chicken breast.Cover and marinate in the fridge overnight or few hours. Or even 10 minutes. Then grill or broil until cook through.
For the salad:
Mix together ingredients 1 to 4 in a large bowl. Whisk until the sugar is dissolve. Set aside.
Using a vegetable peeler or mandolin, thinly slice the cucumber.
Get flat plate or a bowl toss cucumber with the salt . Let it stand for ten minutes to let the juices of the cucumber to run out.
After 10 minutes, wrap the cucumber in a clean dish towel and squeeze gently to remove excess water then stir in dill and radish. Cover and chill until ready to serve
Serve this meal with sesame seed on top of the chicken.