Where monsters and children meet, you get stuff for supporting Level-5!
Kaiju ga Deru Kinyōbi, which translates to Monsters Come Out on Friday, has a lock-on feature in the software. If you own digital versions of the Guild 01 games or pop the original cartridge in your Nintendo 3DS, you get rewarded with a digital artbook.
The artbook, which you can view in the video below, features sketches and concept art from the various characters and structures. It is unclear at this time if the technology is implemented in the other Guild02 games, but this will certainly encourage us to take a look.
Kaiju ga Deru Kinyōbi is available today in the Japanese 3DS eShop and will set you back 800 yen. There are no announcements made for an English release of the title in the West.