[Image: http://25.media.tumblr.com/46324c4cb47211f924ff0d5f0c07858b/tumblr_mmuy4aolbt1soyd6xo4_500.png]
Mabinogi should do a Recettear crossover. Where you do dungeons, shadow missions, and Recettear follows you like a partner that does nothing. Afterwards, you can buy exclusive items, or equipments, or just about anything from the area you completed for a horrible price in tokens which only drop when recettear is with you.
Recettear would appear at any general store, next to the appropriate npc, and they will sell their own summoning scrolls, and have their own specialty event shop upon completion of the dungeon, or shadow mission.