1. Viki: Viki offers all five seasons of the original Japanese drama, along with subtitles in multiple languages.
2. Netflix: Netflix has the Japanese drama available in some regions.
3. Amazon Prime Video: Amazon Prime Video offers the Japanese drama for streaming in certain countries.
4. Hulu: Hulu has the drama available in some regions, including the United States.
5. AsianCrush: AsianCrush offers all five seasons of Hana Yori Dango with English subtitles.
6. DramaFever: DramaFever has the drama with subtitles available.
7. YouTube: Some full episodes may be available on YouTube, but please note that these may not be official or legal sources.