For "Under the Green light" and "Walk on Water" just the artist is same not the author. The story "Walk on Water" is actually a novel by Mokdan JANG. I think Walk on Water is better than Under the Green Light, but story development wise specifically.
If you didn't like walk on water as a story then you wouldn't like under the green light even more.
Since you said you didn't like the top then I guess you'd like under the green light cause the top in it is better as for the chemistry, I'd say both stories have similar chemistry, the relationship starts off of lust so if you're looking for the kind of chemistry that isn't sexualised then i wouldn't recommend either.
Oh, I see. I didn't know these were written by different people. To be honest, my problem wasn't that it all started with sex. It's just that I found the top a bit dull. This is my subjective opinion of course. If I don't find a character interesting on their own, I won't board their ship haha :D Anyway, thank you for your reply!
If I didn't like Walk on Water (I didn't like the top and the couple's chemistry), what are the chances of me liking Under the Green Light?