2. Create a Viki account or sign in to your existing account.
3. Search for "Playful Kiss."
4. Select the episode you want to watch.
5. Tap on the "CC" icon in the lower right corner of the video player.
6. Select "English" from the list of available subtitles.
The subtitles will now be displayed on the screen. You can adjust the font size and color by tapping on the "Settings" icon in the lower right corner of the video player.