Yuki's activites

He/him 
Gay
Transgendah ftm 
Lesbian to trans gay male pipeline needs to be explained IMMIDIETLY

I think it was a shoujo where the ml was only able to see black and white and lived his childhood in a tower because he was an outcast, but a royal. Then the fl comes around and helps him see the color red- see was reincarnated and is trying to help him find future lover. Sorry if that was jumbled but please help it was really good, ps its not completed.....i think