What for real? But I swear I litteraly only romanced katsuki till the end! It must be that I took some romance related options for yoko too since i didn't want to give her the cold shoulder... I feel stupid and excited, i will definitely try again, thanks.
Yeah I did that on my third playthrough, since the second one got me to date haru, but the best one was Katsuki by far. If you hadn't told me i would still believe that you can only romance Yoko like a loser.