The box set collects the three first films. The box came with a plastic slipcover and a backing sheet with some information in Japanese. The films came in regular Blu-ray cases.
1. Front of box with plastic slipcover
2. Back of box with plastic slipcover
3. Back of box with backing sheet and plastic slipcover
5. First film front
6. First film back
7. First film disc
8. Second film front
9. Second film back
10. Second film disc
11. Third film front
12. Third film back
13. Third film disc
Thanks to Yahoo! Japan Auctions members victini511 (images 1-2, 4-13) and maxisno (image 3).