Cut the pea shoots in half and remove the roots.

Shred the imitation crab sticks.

Boil water in a pot, cut vermicelli in half with kitchen scissors, and cook until soft. Drain and set aside. Blanch the bean sprouts briefly and drain.

In the same pot, bring water to a boil, add sake and chicken breast, cover, and simmer on medium-low heat for 5 minutes. Turn off heat and let sit for 30 minutes. Reserve 2 tbsp of steaming liquid and slice the chicken.

Mix the vermicelli seasoning ingredients (sugar, soy sauce, sesame oil) in a bowl.

Mix the chicken sauce ingredients (sugar, vinegar, soy sauce, ginger, sesame seeds, chili oil, steaming liquid) in another bowl.

Mash the pea shoots lightly with a spatula in a bowl. Add vermicelli, bean sprouts, imitation crab sticks, and the vermicelli seasoning. Toss well.