Makikomarete Isekai Teni Suru Yatsu Wa Taitei Cheat

During a lunch break one day, Yuzo Ogata, a male student at a high school, was abruptly transported with four other friends to another world of swords and magic. They were summoned by a foreign planet, the Princess of Space-Time Magician, who stated that they wanted them to defeat the Demon Lord as heroes in order to save this world. I was surprised when four of my friends said, "Temple," but it was just a nice word... and the princess told me a shocking fact. Nevertheless, there should only be four braves?"
What will happen to "a man who was mistakenly summoned to a different world?"