GREEN LIGHTS FROM ME BRO... MY DAD'S ALSO ABOUT TO APPLY FOR IT... AND SOME THE BENEFITS HAVE ALREADY BEEN LISTED BY YEKLOYATRI... AND BTW I THINK NEPAL DOESN'T GIVE DUAL CITIZENSHIP BUT U CAN GO BACK TO NEPAL WHENEVA U WANT CAS I FOUND SOMETHING THAT SAYS A FORMER NEPALI CITIZEN CAN GO BACK TO NEPAL WID A RESIDENTIAL VISA... SIMILAR TO GREEN CARD GIVEN BY U.S. OR SETTLEMENT VISA GIVEN BY U.K. TO GURKHAS....
HERE IS THE LINK TO LEARN MORE ABOUT IT...
http://www.nepalembassyusa.org/visa.php?page=residential_visa