As the title states, I'd suggest watching The Shipper without expecting the story to be about two boys falling in love. As we see from the summary, the focus is on Pan trying to figure out how she can leave Kim's body and back into her own. Does the story contain BL themes? Yes. Does the story have two men that care for each other as more than friends? Yes. But do understand that the journey is not about Kim, it's about Pan in Kim's body.

Story:
In all honesty, I can say that I did really like the ending. I loved the theories that circulated around it but I do love the canon explanation. I liked how it was resolved, I liked how they showed the impacts the ending had on different people. It was raining on my face for a long time.

Re-watch value/Recommend:
The odd themes in TS makes one raise their brows. When watching the show, we understand what is going on and why it's happening. Frankly, it's weird (for me) which is why I would re-watch the show but not recommend it to another person that knows me in real life.

Acting:
The acting was phenomenal on all sides. Every actor that was on screen for more than two seconds had done really well. I applaud First, he had to act as a male character that was possessed by a female character that differed largely from Kim. Not once did I feel that Pan was not in Kim's body except for the scenes in which we meet the Real Kim. There was a clear difference in acting when it came to the Pan version of Kim and the actual Kim.
Ploy, Fluke and Ohm have also done really well. They had the most screen time right after First and they were always delivering their characters perfectly.
If its possible, to please have Ohm and First star as a couple in a show or Ohm and Fluke, along with Fluke and First. They are great actors that deserve more time in the spotlight. This was a well selected cast and I can't wait to see more of their work in the future.