Naruto cuts off hachibis tentacle( the fake Hachibi might be behind the smoke)
The next picture to the right or above, the "nine tails standing up" panel, looks like ink lines.
Thats why Gai seems surprised, "hey Naruto, did you just.."
Naruto says "yeah it looked like I made a mistake throwing the leg"
Kakashi says "sorry for your" leg because Naruto was forced to cut it off.
Then it shows Kakashi kamui the leg, that is NOT a horn.