Ayame NetBSD

Hello, I want to install Ayame on my NetBSD

I have the NetBSD 3.99.23, i dont know what patch i have to
use to
install Ayame on this version.

Somebody can help me with this?
Should i install the current version of NetBSD? or another
older version?

Please, if somebody is working with ayame and NetBSD contact
with me

Thanks!