A fundanshi (腐男子, "rotten boy") is a boy who likes/loves reading mangas that depict a sexual or romantic relationship between two men.
"I heard Akio likes watching gay animes. What is that called?"
"Oh! It's called being a fundanshi. Do you think he would suggest me some BLs?"
...
"Oh! It's called being a fundanshi. Do you think he would suggest me some BLs?"
...
by mizukiakiyama April 15, 2023