Absolutely terrifying.

The man did what he needed to do. Incredible courage under pressure.

Here’s more video context — was this filmed in Japan?

The YouTube description, which is written in Japanese and English, indicates that it was:

October 1, 2022
I was attacked by a bear from behind while descending the rocky ridge of Mt. Futago in Chichibu City, Saitama Prefecture, Japan.
Instead of fear, I switched to the feeling that if it was coming, I had no choice but to face it.
・Keep screaming and intimidating
・Pound with Hammer Fist
・ Front kick
Looking back at the video, it seems that the bear attacked me to protect the cub.
I invaded bear territory, but since they attacked me, I defended myself with self-defense.
I learned karate when I was a child, but I liked mixed martial arts now, so maybe I could use hammer fist instead of punches.

Equipment: GoPro HERO10 (4K,30fps,wide-angle HyperSmooth 4.0 – normal)

Incredible.