CLASSROOM FOR HEROES

The story is set in Rosewood Academy, a school that trains future heroes destined to protect mankind. The school accepts only those with the most potential. Arnest Flaming, a girl who boasts the top record in the academy, is assigned to guide a mysterious but cheerful new student named Blade who rivals her own power. (Source: Anime News Network) — Description from AniList community (anilist.co).