Isekai Kuimetsu no Same

Summoned to try to defeat the Demon King, Shiromi diligently studies at a magic school, but through a confluence of mysterious factors, she ends up conjuring a super dangerous shark, Same. Her classmates and the Demon King's soldiers alike become a delicious dinner for Same. Apologizing as she goes, Shiromi trods a bloodstained world. (Source: Kill Time Communication, translated)