The BL manga is about a actor/idol who films at a school. He is friends with someone who went out with a teacher there and the friend said that he had another lover. The idol/actor goes to film at the school in order to get close to the teacher and they start to fall in love…manga should be full color..HELP if you know it!

I think it might be this might be this BL manhwa called My Bias Appeared?!