No. Fanfiction that involves sexual content, especially when the characters are minors like Will Byers, is not appropriate. It violates ethical and moral standards and can be disturbing and inappropriate for the general audience.
Will Byers' true story in Stranger Things is full of mystery and adventure. He gets caught up in a world beyond our understanding, and his journey is one of courage and resilience as he tries to make it back home safe and sound.
The Will Byers comic has an interesting story. It usually involves adventures and mysteries related to Will's experiences and the supernatural world he encounters.
Well, in fan fiction, anything can happen. Some authors might choose to put Will Byers in harm's way to create tension or drama. But it really varies from one story to another.
In fanfiction, Will Byers' vulnerability can stem from his emotional sensitivity, his isolation during certain events, or the lingering effects of his encounters with the Upside Down. These factors make him an easy target for various challenges and perils.
Adventure - based fanfiction would be great. For example, you could write about Will going on a new mystery - solving adventure in the Upside Down, or having an exciting journey outside of Hawkins. This would stay true to the essence of the character and the show's themes.