I can not decide between the two, they are both my favorite Korean bls but I can not compare them as they are totally different and have a different vibe and atmosphere, but if I absolutely have to choose then I will go with Light om me as it gave me butterflies in my stomach after a long time.

For me, my go to series is light on me. I cannot get over Shinwoo's confession at the end of ep 13. My world revolves around it. Whenever I feel a bit out of it, I rewatch that episode just to uplift myself. Don't get me wrong I also liked Star in my Mind but Light on Me just holds a place in my heart... 

Thanks for the correction. You are right i mixed up the two series. 

Can you guess by my avatar?

"To My Star" and its sequel, "To My Star: Our Untold Stories" remain my favourite BL productions thus far.

 Lasher1971:

Your avatar is To My Star :D  I loved the 2nd Season of To My Star.

I watch them in sequence regularly. The second season shone a light on various aspects of Season 1 that weren't easy to catch* ,  which I particularly liked.

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* I find some of the translations confusing, or they miss the mark entirely. I've now watched four versions of both series with different translations and got a better understanding, but Season 2 shone further light on things that didn't appear to make sense.

Not blaming translators as theirs not an easy task, and one which is highly subjective; I just find it difficult to understand what's being said sometimes.