Colosseum III

is the third volume of the Colosseum light novel series, written by Shinjiro Dobashi and Illustrated by Yukiko Horiguchi. It was released under the Dengeki Bunko Imprint in February 2016.

Synopsis
The school survival suspense presented by Shinjiro Dobashi and Yukiko Horiguchi is finally complete! A 1000-player death game "Colosseum" involving all students. Yuto Hagiwara succeeded in securing the last survivor of the two-year group, Rina Okiha, and bringing a temporary balance to the game. However, the runaway of the students who were cornered by the worsening situation did not stop, causing further tragedy. Nonetheless, Hagiwara, who seeks a solution through "dialogue," and Io Tsukishima, who believes in his reunion and continues to fight alone, have become tattered both physically and mentally. What is the fate of the two? And the end of the game is-- !? You cannot look away. Non-stop school survival suspense, the final edition!

(source: Dengeki Bunko Official Website - Translated)