Light Novel Decision of Ikakko Yamamoto Fujimi Fantasia Bunko

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Overturn the fate of the Naval Maidens who survive the fires of war! During the school trip, Genba Yohei was blown away into a world that closely resembles the Second World War. The person who helped him was not the legendary great commander Isoroku YAMAMOTO, but a girl who calls herself Ikakko YAMAMOTO? Modern high school students change her fate with military and historical knowledge!