Correct and Buddhism is not a religion.
Most Japanese claim to be Buddhist or nonreligious, followed by Shinto, but "Japanese Buddhism" is not Buddhism - it is a strange, twisted, commercialized version.
I won't get into it all since this is a 100-words-or-less forum, but an example would be the Japanese version claiming the need for the deceased to be given a different name, contrary to the teachings of Buddhism.
The more money the family gives to the local monk, the 'better' name the monk will give to the deceased. About $4,000 will get you a pretty good name.
Actually, Japan is about as nonreligious a nation as there is in the world. Nobody asks, nobody cares, nobody talks about it, nobody thinks about it, nobody says theirs is better then yours... except foreigners.
Kamikaze didn't do it to follow a religious belief. Most were scared kids who didn't want to die, but were ordered to do it. Group pressure has always been a powerful (and many times evil) reason for actions. Just look at the horde on squad nights.