Military!

Amid a war between the Krakozhia Dukedom and the Grania Republic, an unexpected “hero” emerges for Krakozhia: Yano Souhei, an ordinary high school student.

His routine is quickly thrown into chaos when First Lieutenant Ruto and Second Lieutenant Haruka roll up in tanks and insert themselves into his daily life. Even an opposing soldier, Shachirofu, joins the commotion—turning Souhei’s home into a battleground where firearms are used with little hesitation.