  The Belle II collaboration operates a substantially upgraded Belle detector
at the SuperKEKB energy-asymmetric e+ e- collider. Belle II will start
recording collisions at the Upsilon(4S) energy in 2018, aiming to collect by
2025 50 ab^{-1} of data, 50 times more than the Belle experiment. We report
prospects for measuring quantities associated with charge-parity violation,
with special emphasis on the Cabibbo-Kobayashi-Maskawa angle phi_3 (gamma) and
observables in semileptonic B meson decays associated with the quark-mixing
matrix element Vub.
