Hello everybody! The film is about how a boy and an old wizard in the body of a teenager go to the old tower and kill the villainess underground. And the next day, she revives and tries to kill them on the roof of the school, along with the students. At the beginning of the film, there was a scene where he enters the store naked.
He also “draws energy” from the wings of KFC. (Google translation)
The Boy Who Would Be King (2019) https://www.imdb.com/title/tt6811018/
Sorry, The KID Who Would Be King. Link is still good 🙂