JK to Orc Heidan: Aku Buta Oni ni Ryougyaku Sareta Seijo Gakuen  

JK and the Orc Corps: The Assault on Seijo Academy by Evil Demon Pigs, JK와 오크군단, JKとオーク兵団 ~悪豚鬼に凌虐された聖女学園~, JKとオーク兵団～悪豚鬼に凌虐された聖女学園～

What is the anime adaptation of Blue Gale LIGHT's PC game set in a European-style brick building that serves as an all-girls school for girls from affluent families? The story begins when the school becomes enveloped by a thick fog caused by an earthquake, and Orc soldiers emerge from it. These brutes attack the schoolgirls one after another, despite their resistance being futile due to the orcs' immense power. Tragic screams echo through the school as no one can explain why this happened.