Far East Spaghetti

Name: Far East Spaghetti
Ingredients: 1 pound spaghetti; 3 tablespoons extra-virgin olive oil; 2 cloves garlic, chopped; 1 fresh red Thai chile, chopped fine; 1 cup frozen, shelled edamame, thawed; 1 bunch scallions, sliced into thin rounds (about 3/4 cup); 4 tablespoons unsalted butter, room temperature; 3/4 teaspoon kosher salt, plus more the pasta water; 20 shiso leaves, finely sliced (about 1/2 cup); 2 teaspoons white sesame seeds, toasted; 2 tablespoons tobiko caviar (flying-fish roe)