The Dangan Ronpa: Togami novels are a trilogy written by Yuuya Sato. They were only released in Japan, and have not received an official English translation.
The first novel, Multiple Counts of Attempted World Domination, has been fully translated into English by user Kyaaa on Dreamwidth. It is available to read here.
The second and third novels have not yet been fully translated. Live reads and partial translations by user JinjoJess on Tumblr are available to read here on Tumblr, and they have also been compiled into PDF form by Dr Medic (FIND AND CREDIT)
This site is an attempt to scan and translate volumes 2 and 3. My priority will be the chapters detailing the Togami Heir Competition.