Ultraman Descends, and I Turn Into a Monster in Front of Everyone!

Leite High School has been shrouded by a dark force. The students cannot leave campus, and all the teachers have turned into unknown aliens. Under the threat of these aliens, three rules have been established. 1. Everything at school must continue as usual, with classes and breaks held normally. 2. Students with excellent grades are allowed to leave the school. 3. The student who places first in the final exams will receive a mysterious grand prize. The principal, the alien Mephilas, declared: “We have come with good intentions, to select the most powerful people in the universe to fight evil beings.” “We will grant you strength, wisdom, and combat skills until you become true warriors.” “Strive hard, young people. This will be the most unforgettable year of your lives.”