For this role we are looking for a high to mid tone. As well as someone who can voice Sou who is timid and sort of shy, but is also able to easily shift into someone untrustworthy with a motive. 

At first introduction, Shin is generally friendly but a bit standoffish and introduces himself as Sou Hiyori. He's secretive due to being distrustful of the other participants. Despite this, he helps everyone discover secrets about where they're trapped. Shin is canny and intelligent, but due to his suspicious nature, he has a habit of jumping to negative conclusions, especially in regards to Sara. Survival is his main priority, and with knowledge of his survival rates that were provided by the organization, his previous personality snaps and warps to what he believes would better serve his continued existence. This also means lying to achieve whatever ends, and skillfully at that.