An Aged Ex-Adventurer
What to kill and where to find the goals.
Repeatable: the items to hand in drop from the targets without limits, and you can run it again and again. Go kill those mobs and the quest comes along for free.
This is an exchange chain: the reward is collected as items traded at an NPC — the shop's full stock is not laid out here.
Story

Ah-ha! You're a novice adventurer... I haven't met anyone like you on the plains for a long time. I'm Tantan. I may be old now, but in my day, I was a famous adventurer! You've heard of me, haven't you? Those young fellows in the village say I'm making it all up! Youngsters these days are just plain rude! So, I've come all the way out here to catch some monsters to show them. I'm out of Soulshots, and my strength is not what it used to be... I'm in a bit of a fix...
I guess you've used all your Soulshots... If you happen to meet any adventurers who have Soulshots... Would you ask them to help me out? Good luck!
(You need 100 C-grade Soulshots.)
Quest steps

During the adventure, you come across a former adventurer, all soulshots are run out at a dangerous hunting ground... and spare the soulshots to the old man with limited mobility. Let's go find out if the old man went back home safely by meeting his daughter-in-law Sarah at the grocery store in the town of Oren...
This quest has no goals mapped: it is a guide task, there are no mobs in it.