#1 Event, takes place in certain shops You were doing your buisness when you heard two villages gossiping something about an attack on a nearby village by Orochimaru.
#2 Event, takes place in Konoha Gakure You meet [an old man/an injured young man/sobbing young lady] who begs you for food.
a)Buy [him/her] an apple (5 gold)
b)Buy [him/her] a bowl of ramen (300 gold)
c)Throw [him/her] a piece of gold and walk away (1 gold)
d)Push [him/her] aside and continue on your way.
Once a certain condition has been met in event #2, event #3 will take place.
#3 Event, takes place in any town The [old man/young man/ young lady] tells you about Orochimaru's attack on their village.
#4 Event, takes place in the forest You came face to face with the giant snake that attacked the nearby village!
~~~~Fight~~~~
Orochi the giant snake lunges at you with Deadly Fangs.
Reward: 20% EXP.
#5 Event, takes place in any town You bump into one of the villager from the nearby village. He thanks you for killing the giant snake. Now they can rebuild the village in peace.
Reward: 5 gems.
---end---
This event takes a long time to complete so 5 gems should be a reasonable reward for completing it. You dont get any gold as your reward because if the villages have that much gold, they wouldn't be begging for food now would they?