It's old and i don't remember much of the movie except the fact that the ML is a man and in the movie he has been infected/cursed and has become a werewolf and has been to an asylum because they think he is mad and in the end decided to prove to him that it was all in his head by putting under the fullmoon but he transforms and flee.
One of the Howling movies, maybe? he isn't sent to an asylum tho. I'm deducting 2 points for that, giving you a score of 4/10
Another movie to check out that is similar Werewolf Boy a popular Korean movie https://en.wikipedia.org/wiki/A_Werewolf_Boy
Well the actor and the actress: Song Jong Ki and Park Bo Young respectively are huge stars You might have watched Descendants of the Sun or Oh My Ghostess which both of them starred in separately
We are newly formed in cinema, we are going to film a short film called "O Ultimo Uivo" ("The last howl"), it is a Werewolf movie, made in Brazil according to the Brazilian legends, at the moment we are raising money through a Crowfunding, if someone can collaborate with some amount from 3 dollars, follow the link of the site https://www.catarse.me/o_utimo_uivo and if you want to know more about the movie this is our facebook page