Extreme Modification Magical Girl Mystic Lune is a title listed as an adult-oriented game or interactive piece.
The final word in our keyword is "Link." Not just a connection, but a chain. In the Mystic Lune canon, there are currently 14 known "Links." Each Link is a girl who underwent the Extreme Modification. Link 07 (Mystic Silver) went feral after her dermal lattice failed. Link 12 (Mystic Garnet) achieved such a high level of modification that she ascended to a non-corporeal state, becoming the moon itself—and thus requiring a new girl to link to her.
Note that "Extreme Modification" also refers to a popular item in the game
The mention of "paper" in your query may refer to papercraft models of the character or, more likely, "Fanbox" (which is sometimes colloquially or through machine translation associated with "paper" in various communities). How to Find the Content
Mod responsibly, witches.