Are there other Kaiju?

Since the beginning of the manga I've never understood if Daikokuzan is the only Kaiju existing in its world or not. My mothertongue version of the manga translates masayoshi's explanation of disastrum mentioning multiple Kaiju, but knowing Japanese, I decided to try to read the original source, unfortunately, because of Japanese lack of plurals, Chadayoshi's explanation was cryptical.

What do you think about this? Will there be other Kaiju aside of Daikokuzan?