bran will be super supportive of whatever cas wants to do. he's a huge cheerleader for his friends in accomplishing their goals big or small. he'd find that actually hilarious tho that cas would even think to do that. also to him it's a non issue, but bran has been out since he was a kid. maybe 15/16. he's always been super open about who he is. he's very secure in himself and has never felt the need to hide it. like i said for him it's a non issue, but something he always brings up to people (i.e. room mates) since he knows it can be an issue for some people.