The Belle II detector at the superKEKB electron-positron collider is a heavy flavour factory that re-started collecting data this year after a one-and-a-half year shutdown. One important class of measurement at Belle II concerns decay-time-dependent measurements of B-meson decays. They can be used to constrain the CKM quark-mixing matrix, and give insights into the origin of the asymmetry between matter and anti-matter in the universe. I will present recent Belle II results in this area, illustrating the complementarity between Belle II and LHCb. I will also discuss the future prospects and share some ideas of future directions, including territories unchartered at Belle, such as the exploration of CP violation in electroweak penguin decays.