Now, you can house even more horses than before! You can now find the Additional Horse Slot 6 in the Shop under "Items" and "Miscellaneous". You will also be able to use a new slot immediately after you purchase it, so you no longer need to relog in order to apply it.
If you notice any issues that occur after purchasing the new slot, you might want to let the Alicia Online team know. If the new slot works well, the team might consider adding more additional slots in the future.