Responses

“Normal,” sure. About as normal as any other explicit or pornographic book, and should therefore probably be kept to yourself. (In theory, anyways. Alas, the internet.)
“Common,” however, may be debatable. And that is the key word that is often misused or misconstrued in this type of conversation.
Just something to keep in mind.
Gooning to yaoi r normal, Who said its not?? Those yaoi r just PORNHUB in non animated form