Voice or Noise Series by Yamimaru Enjin

College professor Narusawa can speak to animals, and Shin-chan yearns to learn as well, for the sake of his dog. But will that knowledge bring Narusawa and Shin-chan closer together, or will it tear them apart?

With their misunderstanding cleared up, Shinichiro and Narusawa are getting closer. But with Acht not having talked for the past six months and a crazy night of drinking and sexual advances from Narusawa's students, will Shinichiro be able to handle their relationship?

Three years have passed since Narusawa went abroad, and Shinichirou has grown up quite a bit in the meantime. His feelings remain unchanged, though, and so when Narusawa returns, it's time to pick up where they left off! But things still don't quite run smooth for the happy pair, especially when talking cats are involved. And that's before a very peculiar exchange student enters the picture!