Many cracked copies distributed in 2018-2019 were based on the Steam international build, which lacked Japanese text and voice options. The v3 update restores the Japanese language pack, a crucial addition for purists.
Overview
Possible interpretations of "v3 2plaza 2021"
Historical and community context (circa 2015–2021)
Technical content such an update might include
Legal and ethical considerations
Security and safety
Preservation, archival, and documentation
Practical guidance for players (safe, general)
Likely outcomes and impact of a v3 2plaza 2021-style update
Alternative reading (non-scene meaning)
Concise takeaway
If you want, I can:
You might wonder: why would anyone release an update for a 2018 game in 2021?