I am a fan of Hyung-sik but this was a really boring adaption compared to the original series. It clearly didn't have strong enough ratings to warrant a second season. Even the Japanese adaptation made it two seasons.
This reality series concept has been done before. The only "first ever" is that the cast is all BL actors. Having couples is a bit too fan service and less "reality" imo.
S1 was way better than S2. S2 felt like just filler / back story for the next season. Based on how these new characters were written, everyone should have been dead by Ep 2.