well it doesnt feel like a BL, since I would think a BL is where two men are involved romantically and since this is one sided its just another love rival, like how the love rival usually likes the FL instead of the ML, its just switched with this. although im surprised kanda has a lot of supporters! if he was still the love rival but instead have been interested in FL, and let FL do anything to him even if she is drunk, its just weird, like you know they aren't in their right mind, I feel like more ppl would call him a creep and he would have much less supporters than now but since he's interested in the man instead of the woman, I feel like y'all eat that shit up (just my imo tho)

It's uncomfortable when there are love triangle involved. What's the point of making Kanda as third wheel. It's like BL with suddenly a woman present between them, where that girl doesn't even got a chances to be with main character at the end because it's BL story. We already can guess here that sensei will be together with shibuya. It's heartbreaking when Shibuya crying.
Did author just randomly add BL elements as it popular nowadays than shoujo to attract reader.