Halve the cucumbers, scrape out the seeds with a spoon, and thinly slice on a diagonal.

Combine the cucumber slices with 1/2 teaspoons of salt in a bowl and let it rest for a few minutes.

Stir the rice vinegar, water, and sugar in a medium sized glass jar until the sugar is dissolved.

Rinse and drain the cucumber slices, add to the vinegar mixture, and combine with a spoon.

Refrigerate for a few hours before serving and eat within a few days.