The first two episodes were confusing and not too engaging, but it's well worth giving it a chance.

This is one of the most attractive casts I've seen in a long time, and the acting is fairly good. There are three couples, the main pair and the two side couples - as is not uncommon, the side couples far outshone the main pair, who were the weakest in every regard - their story was odd and full of holes, they looked like they were held at gunpoint to play gay, and their kisses were among the worst I've ever seen. Fortunately, J-Min has his singing career to fall back on, and Kim Yeong Suk looks really, really good with his shirt off, and I liked that the show didn't pretend his abs had no effect on Lee Hyun.

The other two pairs have wonderful chemistry and their characters are more appealing, with MVP going to Lee Kwang Hee as Maru, who is a powerhouse of vulnerability and cuteness and yet so sexy.

I liked how this was about pairs of guys, and didn't divide them into ukes and semes - in fact it subverted expectations. You would assume Sung Min was the seme - older, taller, more muscular. and yet passive and shy, whereas Joo Hyuk is more assertive and confident. None of which means anything in real life about who does what in bed.

The last episode is a bit of a throw-away and could have been skipped, although it wasn't unpleasant.

Anyway, I'd recommend this - it's possibly my favorite BL series lately.