Question: Skagboys is a 2012 novel by Scottish writer Irvine Welsh, it is a prequel to his 2002 sequel, which novel published in 2002 by Scottish writer Irvine Welsh, and is the sequel to "Trainspotting"?

Context paragraphs:
Glue (novel): Glue is a 2001 novel by Scottish writer Irvine Welsh.  "Glue" tells the stories of four Scottish boys over four decades, through the use of different perspectives and different voices.  It addresses sex, drugs, violence, and other social issues in Scotland, mapping "the furious energies of working-class masculinity in the late 20th century, using a compulsive mixture of Lothians dialect, libertarian socialist theory, and an irresistible black humour."  The title refers not to solvent abuse, but the metaphorical glue holding the four friends together through changing times.

Filth (novel): Filth is a 1998 novel by Scottish writer Irvine Welsh.  A sequel, "Crime", was published in 2008.  It was adapted into a 2013 film of the same name, directed by Jon S. Baird with James McAvoy in the lead role.

The Sex Lives of Siamese Twins: The Sex Lives of Siamese Twins is the ninth novel by Scottish writer Irvine Welsh, published in May 2014.

Porno (novel): Porno is a novel published in 2002 by Scottish writer Irvine Welsh, and is the sequel to "Trainspotting".

Reheated Cabbage: Reheated Cabbage is a collection of short stories by Scottish writer Irvine Welsh.  It was released in the United Kingdom in July 2009.

Trainspotting (novel): Trainspotting is the first novel by Scottish writer Irvine Welsh, first released in 1993.  It takes the form of a collection of short stories, written in either Scots, Scottish English or British English, revolving around various residents of Leith, Edinburgh who either use heroin, are friends of the core group of heroin users, or engage in destructive activities that are implicitly portrayed as addictions that serve the same function as heroin addiction.  The novel is set in the late 1980s and has been called "the voice of punk, grown up, grown wiser and grown eloquent".

Skagboys: Skagboys is a 2012 novel by Scottish writer Irvine Welsh.  It is a prequel to his 1993 novel "Trainspotting", and its 2002 sequel "Porno".  It follows the earlier lives of characters Renton and Sick Boy as they first descend into heroin addiction.

Crime (novel): Crime is a 2008 novel by Scottish writer Irvine Welsh.  It is the sequel to his earlier novel, "Filth".

Tony Black (writer): Tony Black is a Scottish writer.  Much of his work is in the tartan noir crime genre, featuring Gus Dury, Rob Brennan and Doug Michie.  He has more recently pursued projects in other literary directions.  Irvine Welsh has called Black his "favourite British crime writer".

The Bedroom Secrets of the Master Chefs: The Bedroom Secrets of the Master Chefs is the sixth novel by Scottish writer Irvine Welsh.

Supporting paragraphs: Skagboys Porno (novel)
Answer: Porno