Itinerary to Nepal

 My itinerary to Nepal. Since an air fee Tokyo - Delhi is 1/3 of Tokyo - Kathumando. What I should consider using this route is that they say I, who is not Nepali, can go through only 6 permitted border gates between India and Nepal, although Nepali can easily use more without visa.

I’m just wondering why I don’t hear Nepali use the plane from India to Tokyo (even if using Kathumando Air Port they have to use a bus from their town to).