Tenko's family travels

Tenko who used to love travelling with his family, with an unexpected trip that Tenko never knew about, leads into an adventure that takes him back to what he loves. But when Tenko finds out about the trip he's worried that something will happen, will Tenko be able to help his family or will it all end up him being all alone.

With 3 months of it he gets even more worried about his family that he wants to go home, but does he know what he's going to get himself into or will his family have to pay the price.