It's safe to download the app. EBOOK CLOUD INC developed 桐蔭横浜大学 that falls into the Educational category. People rated the tool 3.1 on Google Play.
The most recent release was on Mar 31, 2015 and this application was downloaded and installed by over 100 users. Get the installation package of 桐蔭横浜大学 1.0 that is completely free and have a look at users' reviews on Droid Informer. The app can be launched flawlessly on Android 3.1 and above.