Its like learning any foreign language. Every language comes with its own challenges. Languages like German, French do not have a separate script, but have a more intricate grammar as in gender, plurality etc.
2. Japanese language has three scripts viz, hiragana , katakana & kanji. But Japanese grammar is simpler and very similar to our regional languages without the challenge of gender etc. Watch this video https://youtu.be/p1lYmY7pbrc
3. Japanese sentence pattern exactly matches Indian mother tongue. Hence it is not hard for Indian students to learn Japanese.
4. You may also want to check the points followed for students of Sakuraa Nihongo Resource Centre Japanese language course at http://www.learnjapanesewell.com/japanese-classes-in-bangalore---why-snrc.html