I really like this app but I wish it had japanese as and option to learn. :/
You can learn Japanese by doing the English from Japanese course(which is what I'm doing). It's difficult if you have no experience with the language. If you want to learn Japanese, go ahead and learn hiragana and katakana, then look online. Memrise is a good site to learn vocabulary and kanji.
I look like you need to Japanese Anime and Manga. Like a I need US movies for study English.