Futsuu desu ga Nani ka? Saikin wa Ayakashi Datte Koukou ni Ikun desu.

Makoto Tanaka, an ordinary guy who passed the entrance exam for the regular course at a prestigious high school, bumps into the petite Kumi Okijo on the first day of school and apologizes in a panic...but she has animal ears on her head!? It turns out Kumi is a nine-tailed fox who came to learn about the "normal" way of life in the human world! The two become friends after she convinces him that it was a mistake as the ears vanish in an instant. For some reason, Makoto continues to attract "unusual" students! And then there's the existence of the advanced course, which doesn't think highly of the regular course—will Makoto be able to graduate "normally"!?

(Source: Kadokawa, translated)