If you're looking for a more convenient option than a whetstone, a 3-stage knife sharpener may be worth considering. This tool has three special sharpening notches. The diamond notch is specifically for sharpening ceramic blades, but it can also be used to straighten crooked metal blades.
The ceramic "rod" notch removes burrs from metal blades and polishes them. The tungsten steel notch is ideal for rough-sharpening V-shaped blades, making them sharp enough to cut once again. However, it is not recommended as the final sharpening stage. It's best to move from the tungsten notch to the ceramic "rod" notch to ensure that your knives are perfectly sharp and polished.