Only the current version so far — new entries appear as the app ships updates.
Japanese Keyboard &Translator is a tools app by LANGUAGE WORLD with 50,000+ downloads (about 88K estimated). +20 installs in the last 7 days. Rated 3.5 from 379 ratings. Released Dec 15, 2017. Install growth, rank history, SDKs and ad networks.
From the store listing: “Japanese keyboard with amazing theme & easy to use Japanese typing keyboard”