My Instant Death Ability is Overpowered - Season 1, Episode 03: The World Isn't So Kind as To Allow One-Sided Attacks
Trailer
Yogiri Takatô's school bus was summoned to another world by a Sage who shows just how horrible she and the world is by killing the adults for petty reasons and telling the students they are to be trained as sages to fight demons. She only takes the gifted ones, leaving the rest to die.
