PinkFong’s Youtube channel has many high-quality cartoon videos of Korean children songs and stories https://www.youtube.com/user/pinkfongko. All videos have hangul subtitles so you can increase your Korean vocabulary by watching them.
For example this video of 커다란 순무 (The Giant Turnip), a story originally from Russia.
I remember I read the picture book in Japanese for my baby daughter when we lived in Japan. The Japanese title is おおきなかぶ (Ookina Kabu).
My 6-year-old daughter is learning English and she loves watching videos on English Pinkfong (Kids Songs & Stories)’s channel: https://www.youtube.com/user/SmartBooksMedia.