Hiroshima to Nagasaki Round Trip In One Day

Hi,

My daughter and I have purchased the JR 7 Day Green pass and will be in Hiroshima. We would like to travel from Hiroshima to Nagasaki arrive by noon so we can do a half day tour. We then would like to return the same day after 6 PM to return to our hotel in Hiroshima.

Is this possible? What is the last train from Nagasaki to Hiroshima?

We also signed up for the meet and greet when we arrive in Tokyo. Can the person we meet help us reserve the train trip?

Thank you for your help.

Steve Trippe