Shuumatsu no Harem: Britannia Lumiére World's End Harem: Britannia Lumiére

Synopsis

High school girl Eri has a strong and pure heart. One day, she is suddenly summoned to another world, "Britannia" where only men exist. To save this world as the "goddess of light," a harsh battle begins in this world full of men! (Source: MANGA Plus)