It was an old anime where 3 teenagers journeyed to help the local area recover from what the evil ruler did to the kingdom. In one village they helped an old lady with a farm problem. Once, when they were travelling to their next destination, they were ambushed by the ruler's guards (part monsters) and managed to beat them.
Stopped by a lake once. I remember the 2 male teen heroes met up with the girl when they were travelling through a forest and found she had useful wildeness skills and knew some magic spells, and convinced her to join them after saying they could help find out about her past. She either had a bow or staff weapon and pet/guardian animal that she grew up with. The main male hero has a special sword weapon.
They managed to arrive at the main castle to see it was partially in ruin when they went to challenge the evil ruler.
That's my vague remembrance. Some could be wrong and I appreciate any help to shed light on to this. I would love to see how this series ended.