They do not share the same plot. However, Lee Mi-hyun's and Kang Kwon-joo's special abilities are similar. Lee Mi-hyun (Moving) has super senses, whereas Kang Kwon-joo (Voice) has super hearing. If you enjoy stories in which the protagonist solves cases with their special ability, you might like Voice!
Both are OCN dramas that involve suspense and crime with strong ambitious main characters trying to solve the mysteries they come across. If you are looking for a drama that has the same type of intense dark storyline just like in The Guest, Voice is definitely a good pick to watch. Not to mention, both dramas are directed by the same director, Kim Hong Seon, who did a fantastic job with Voice, and his talent shows here in The Guest too. Kim Jae Wook is also in both dramas so make sure to check Voice out if you want to see more of his charismatic acting!
This is slightly different. Voice is a criminal show. The special thing here is that the lead female character was in a car accident as a child and developed an ability to hear the smallest sounds from very far away. An extremely advanced skill. Almost like a dog. The way Mon described herself, like her skill is dog like in smelling ghosts and she gained it after a car accident as a child.
both main leads have enhanced senses. apart fro one of them being male and the other female in voice she lost her sight but regained it a few years later as a child. in legal maverick he has been blind since he was 6. one of them is a lawyer/barrister and the other is a police officer. both are set in an investigation type setting.