I worked with him, too. Before we came here. I confirmed that he's definitely the one from the bunker.

[Akira speaks up from his corner, his first bento of the night open and half eaten.]

If you need to be with him for any reason, just be aware that he's smart, but doesn't trust anyone at all. So you probably shouldn't trust him too much either.

[Does Akira trust Yuusuke? No. Is Akira attached to Yuusuke? ...A bit.]