The purpose of the Doujou is to train pets, to provide a place to leave pets you aren't using, and also to train their potential. You do this by talking to <Nazuna> the instructer[sic]. The Doujou can hold a maximum of 150 pets.
Besides the 6 small medals (click on the map on the right for location), there is no real treasure here. You can pickpocket the koma-inu near the front, but not the foreign gate (which is precious) in the upper right.
It uses track number 61 for it's music (mcJapan).
More testing needed: It is possible that pets may find items during an extended (more than 1 month) period of training at the Doujou. This may have been a hidden update from one of the recent patches.
Talking to <Nazuna> brings up 2 options. The first will cancel, but the second brings up a list of the pets currently with you. Selecting one of these pets will charge you 50k gold, and the pet will then stay with <Nazuna> at the Doujou. The pet will no longer show up on your list, and will not count against your pet limit. The pet will very slowly train skills while you walk around. Apparently, it seems to use distance traveled rather than time passed to determine how much training is done. It is still going to be very slow however you do it.
Once a pet stays here, a third option will appear. This option allows you to train your pets' skill potential. This costs 10k + 50k for every pet staying there. So, 60k for one, 110k for 2, etc. This seems to be somewhere around 5-15% per skill.
As of version 1.10, the cost for having a pet stay at the Doujou has been reduced to 10k gold, and the cost per pet for training is 10k + 30k for every pet staying there (40k gold for one pets, 70k gold for two pets, etc).
In Elona+ version 1.42, an option was added to Nazuna's dialogue that allows the player to change the text emote that happens when the PC (or a specified pet character) casts a spell or attacks while unarmed -- that is to say, when casting, the player can "expand a magical circle" like Imps do. Sadly, it only seems to work when the game is set to Japanese language.
|Towns||Derphy · Larna · Lumiest · Noyel · Palmia · Port Kapul · Vernis · Yowyn|
|Dungeons||Ancient Castle · Crypt of the Damned · Dragon's Nest · Lesimas · Minotaur's Nest · Mountain Pass · Puppy Cave · Pyramid · Tower of Fire · Yeek's Nest · Fort of Chaos (Beast) · Fort of Chaos (Collapsed) · Fort of Chaos (Machine) · The Void|
|Other||Your Home · Cyber Dome · The Embassy · The Graveyard · The Mansion of Younger Sister · Miral and Garok's Workshop · The Truce Ground · Jail · Show House|
|Deeds||Farm · Discarded ranch · Dungeon · Museum · Ranch · Shop · Storage House|
|Elona+||Doujou · Abode of Witch · The Adventure Seminar|