Well, many K-idols are suspected of being gay (and Key is among the names that pop up often), but very few were called "transgender". Koreans have suspected Sungjong and Taemin to be transgender since they look "like women" and suspected Amber to be transgender because she looks "like a man". It's not difficult to understand what it means "look like a transgender" in Korea. And there are not similar gossip about Key, LOL!