Sooo, I don't remember who was first, there's been so many over the last 5-6 years, muhahaha.
For sure it was a drama on YT but that doesn't narrow it down one bit.
well, i'm wating for rx to comment hahahah
mine was Last Twilight and I watched it as it airs. I'm not sure how I chanced it upon it, but I was just looking for bromance (the bickering-but-supporting-each-other staff, not the lovey-dovey kind)