Spoiler: Kamehameha wave done wrong?

Final fight: I dont know bout you guys but that is the most weirdest kameha wave I have ever seen. He shoots them like three times at a ridiculous short range-? Is it a kameha wave or a summoning jutsu cause I see fireballs everywheere after he does that.

Kameha waves are suppose to be long range attacks right?

What are your thoughts?