GATE (Light Novel), Vol. 1 - Part II

The Japan Ground Self-Defense Force has won a sweeping victory in the battle to defend Italica, a city in the Special Region. Yet while the situation beyond the Gate begins to shift, back in Japan, opposition lawmakers are sharpening their attacks over the JSDF’s actions.
Before long, First Lieutenant Itami—and even several residents of the Special Region—are summoned to the National Diet as witnesses. For the otherworldly beauties crossing the Gate for the first time, Japan’s modern civilization is a dazzling wonderland of discovery.
But unknown figures are already closing in on them from the shadows...