Hello, I have a big question and I need help or information about it. 

I have been working on turning a fanfiction story into a visual novel for a while. 

My concern is whether doing this could get me into trouble. The characters used in the fanfic are Korean artists and the story is about MxM romance and has some +18 content, so I was wondering if I will have no problems transforming the story into a VN and using the image and name of these people.

All the time I have seen people who make fanarts, comics and even games about these artists that in several cases include adult content and I do not see that they have problems, but I think it is better to be well informed about it.

I think that as long as I don't sell the game or use the image of these people to make money ... everything should be fine. But I don't know if I should change their names or something. 

Please if you can help me with this matter I would greatly appreciate it.