Our research field is quantum-theoretical condensed matter physics. Specifically, we focus on quantum anomalies that arise in some metallic crystals in a topologically protected way. The anomalies constitute the breaking of a classical symmetry on the quantum mechanical level, which enables various peculiar phenomena such as charge motion along an applied magnetic field. Our research addresses fundamental questions regarding the manifestation of quantum anomalies in condensed matter and the anomaly-hosting topological metals.