Added Katajima Island with Katakana learning.
This includes: 3 new main locations (Katajima City, Sports Center, Katajima Resort) each with their own design and music, as well as a new Map (of Katajima Island) and interiors.
Nihongo Hunter now covers both Hiragana & Katakana collection.
Bugfixes:
- Fixed a bug where player would spawn at incorrect places when exiting buildings.