Certain Magical Index NT, Vol. 4 (light novel) - Kazuma|haimura Kamachi

In the fallout of the attack on Hawaii, the twenty-seven partner corporations that broke away from Academy City announce that they will be hosting Natural Selector, a combat tournament in Eastern Europe. By holding the event, the Anti-Academy City faction hopes to prove the existence of powers that surpass psychic abilities, thereby destroying the identity of Academy City. With the help of Gremlin, an organization that merges magic and science, their scheme gets underway. Will Academy City be able to stop them before it's too late? \nDisaster in the Arctic Circle...In the fallout of Gremlin's attack on Hawaii, the twenty-seven partner corporations that split from Academy City rebrand as the Anti-Academy City Science Guardians and announce they will be holding Natural Selector, a martial arts tournament in Eastern Europe. By staging the event, the Guardians hope to prove the existence of powers that surpass psychic abilities, thereby destroying the identity of Academy City. With Gremlin's help, their scheme gets underway. Naturally, however, the Guardians' blatant power grab invites a reprisal from Academy City's higher-ups, who send three powerful agents to dismantle the tournament. As each side's forces clash, all hell breaks loose!