For me, the best Korean BL.

I find the story idea cool, that Tae Myung Ha is brought into a game where he's young again and has to make Cha Yeo Woon happy again. Along the way, he has to complete several tasks and make decisions, which broke his heart multiple times.

The whole setup of the story is well-executed, and it's only at the end that everything is resolved. With the plot twist that Yeo Woon actually embodies him in his previous life, sort of. (I still haven't fully understood whether he's living a new life or still the same). Ultimately, he helped himself to be happy again and found a wonderful love in the process.

I'm generally a big fan of such "unusual" stories. Overall, it's a mega BL.