You are downloading the Obenkyo XAP file v18.104.22.168 for Windows Phone. Obenkyo is a free and useful Education app: Learn japanese by studying hiragana and katakana and kanji,and test yourself with flashcard and multiple choice test (For now, only for kana). ... You can now download the offline XAP file to install & try it.
Download Locations for Obenkyo 22.214.171.124 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Obenkyo XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.