There are 4 profiles filed under Playwright.
4 of them are credited on at least one title record on this site, 4 credits in total.
Those credits divide into 1 supporting role and 3 credits behind the camera.
People filed under Playwright are also filed under Screenwriter (3), Director (2) and Actor most often, so the two jobs regularly sit with the same person.
Between them they are recorded under 3 nationalities, most often Japanese (2), Thai and Taiwanese.
The records that draw on them most are Flower Boy, Fragrance of the First Flower and The Boy and I Who Will Break Up in 100 Days.
Every figure above is counted from this site’s own records and changes as records are added.