Since .7z is a high-compression format, you need specific software to access the contents.
The franchise was launched as an ambitious "entertainment project" featuring a tragic fantasy story of two souls sharing a single fate. It included: Dia Horizon.7z
: A series of five-minute 3DCG flash animation episodes that mixed the game's fantasy world with office worker humor. Since .7z is a high-compression format
: A mobile RPG where players lead adventurers through dungeons using a card-based skill system. Note: Official service for the game ended on May 31, 2018. Dia Horizon.7z