I mean, it's just one program out of many. Japan is the largest bilateral national contributor to foreign aid to Nepal: https://www.foreignassistance.gov/cd/nepal/current/obligatio... https://en.m.wikipedia.org/wiki/Foreign_aid_to_Nepal

In 2019, 146.7M vs 129.0M from the U.S.

Lots of Japanese people travel to Nepal to volunteer in schools and clinics and stuff; when living in Japan I knew several different people who'd done that sort of thing. It's like U.S. doctors and contractors doing projects in Central America. Japan is very into building soft power in SEA through development assistance.