The MEXT Scholarship is offered by the Japanese Government for undergraduate, research, and specialised training students. For undergrad, you apply after completing Grade 12, so Grade 10 is the right time to start preparing. You must have consistent academic scores (generally 85%+ is competitive), and the application involves a written exam in Math and Science/English, an interview, and school recommendation. Start now by strengthening your Japanese language skills, maintaining strong academic grades, and researching Japanese universities in your field. The Embassy of Japan in India announces the application window usually around April-May each year. There is no application fee, and the scholarship covers tuition, accommodation, and a monthly stipend.