Team_egg is the developer of ウナ先生の危険物乙4類 that can be found in the Educational category. Over 0,5K users downloaded and installed the tool and its latest update was on Feb 12, 2019. On Google Play, this application is rated 4.2 by its users.
It's free to get the installation package of ウナ先生の危険物乙4類, also, you can check out users' reviews on Droid Informer. The app works fine on Android 4.0 and higher. The app is completely secure to download.