Please recommend stories where son is initiated into family orgies on his birthday
My story "Spring Break, when it all began" has the 14 year old MC lose his virginity on his birthday to his sister and aunt.
A story of when they don't Tiny Tim
At its peak nine of the ten members of Tim's family are a part of the orgy (Tim's grandparents, Tim's parents, Tim's siblings, one uncle, one aunt, and one cousin).
That orgy group dissolves during the story, with Tim's sperm donor and the sperm donor's son being excluded from future sexual activities by all members of the group.
At the end I seem to recall that the aunt, uncle, and cousin still have sex together. Tim is not interested in having sex with any of them for various reasons. It appears the grandparents have at least decreased their sexual activities with those three members of their family.
Tim does have sex with his mom, sister, and girlfriend along with his girlfriend's mother.