Go Princess Go is the prequel of The Princess and the Werewolf. As trailers and brief plot shows, FL is Go Princess Go leads 3rd daughter. The suggestion is to watch the prequel first, to understand the plot better

The original version, the adaptation of the Chinese source material, the Chinese novel. It's suggested to know the real plot and how the author developed the story for a comparison. Emotional rollercoaster not bland like korean adaptation

similar struggles from the main leads, great romance and a serious plot. Workplace problems with life problems

Thailand version would be darker and developed differently, but the plot is similar. The development would change

they are inspired by the same story and have the same emotions, but i find a better develpment in Meteor Shower

they have a lot of similaritiesn in the setting and the plot, but a different development. They have the same level of emotions though

They are Japanese and Chinese version of the same series, despite some differences. I prefer this 2009 version rather than 2018 one. It's more emotional, more invested in growth about the characters and more intriguing.