It's a very exciting adventure anime. The novel were written by Sigsawa Keiichi, the author of the Kino no tabi. It is set in an alternative world with a technique 1900's years. One little story at about 3-4 episode. Positive: - good story - loveable characters - real romance between the characters - beautiful landscapes - exciting action scenes Negative:- a little rough-and-ready ending
- some unspoken fact

The anime is separated two part. There are 15 years between the parts.
The stories plays in the school holidays(spring,summer,autumn,winter).