5.0

- This review is for the whole series - 

A very nice little story. I liked the concept of the tunnel and the connection between the main characters. It felt too short, the end felt a bit rushed but I still liked it and I'd read it again sometime. (I'm going to ignore the fact he was in the tunnel for so long, never aged a day and meanwhile, she aged. The relationship after that doesn't sit too right with me but It is what it is)