It's a 100/10 for the friendship between Geon Woo & Woo Jin, the excellent definition of their muscles, and the red shorts. Although overall this is a very violent kdrama, the two of them brought so much warmth and humor. I loved how Geon Woo remained true to himself. I was not expecting his character to be so precious!

I watched this in two days, driven by the fast pacing and intensity. Choi Tae Ho, Hyeon Joo, Yang Jung, Doo Young, and Da Min were all so lovable. The entire cast was amazing, and Park Sung Woong plays a very formidable villain which made it a high stakes story. Although I fast-forwarded through the violence sometimes I did feel like the fights were choreographed and executed really well. The reason why my rating is lower is for two reasons:
1) It's sometimes baffling when the good guys underestimate the threat they're up against. Some of them should've known better!
2) The plot of the last two episodes was underwhelming (but bless those red shorts & training scenes). Choi Si Won's character especially felt like a missed opportunity; he really fell flat.

But overall, so glad I watched this because I'm an even bigger fan of Woo Do Hwan and Lee Sang Yi now.