All APKs for (Android 8.0+) variant
Xperia™ Japanese keyboard 3.7.A.1.7 (arm64-v8a) (Android 8.0+)
November 10, 2018
Xperia™ Japanese keyboard 3.7.A.1.4 (arm64-v8a) (Android 8.0+)
October 4, 2018
Xperia™ Japanese keyboard 3.6.A.0.7 (arm64-v8a) (Android 8.0+)
March 23, 2018