Lightly coat sliced chicken with cornstarch for a silky surface and clinging sauce.
Whisk the soy sauce, rice vinegar, sesame oil, broth, and honey together in a small bowl.
Heat oil in a large skillet or wok over high until shimmering. Add chicken in one layer; leave undisturbed 2 minutes, then stir. Cook until just opaque, about 4 minutes total; transfer to a plate.
Add the asparagus to the hot pan and stir-fry 3 minutes until bright green and still snappy. Add the garlic and ginger and cook 30 seconds.
Return the chicken, pour in the sauce, and toss for 1 to 2 minutes until it thickens and glazes everything. Finish with the sesame seeds.