Required quests
Main dialogue
Ah, you are the one who protected Oinkers from attackers! What good timing! Finally, I have the results of 4031507. When you train monsters, you shouldn't use 4031507 as it is. When you use 4031507 as it is, monsters can become violent. I need something to neutralize 4031507. I have an idea, but it will require a bit of a journey on your part...
Do you know the town of Leafre? The leader of that town, Chief Tatamo, sells a special perfume bottle. I've done research and apparently, if you put 4031507 into the perfume bottle, you can calm monsters, making them much easier to train. The power of the bottle can remove the dangerous scent of 4031507. Can you get the bottle? Again, I will make it worth your while!
Accept
Decline
You won't help me again? Even though you already have the monster riding skill and 1912000? That's disappointing, but I understand. Come back when you're ready to help me again!
Main dialogue
Accept
Take this to Korean Folk Town. There are pigs just like Oinkers that you can train somewhere in the wild. You might want to look in the Tiger Ridge map, there should be some rubble lying about--it's actually a portal. Travel through that and you'll be in a new area with the pigs. Use the perfume when you're close to one and you should capture it. After that, equip the Mount and the saddle, and use your Monster Riding skill to call the mount. I hope I can see your trained monster next time you come to the Aquarium!