Yes they will only accept nrn citizenship in most reputable prominent banks like SBI n Standard Chartered! The other regular banks I heard they even let you open account with only using your passport! Just go to the bank n they will fill up all the info for you! U don’t need to do a shit rather than signing n verifying the process! KYC is good at prominent banks but might be hacked if you open account in banks like NIC or Nabil or some Nepali banks n finances! I only suggests you to open bank accounts in banks that are run by a foreign country like SBI by India as chances of these banks going bankrupt is less compare to other Nepali banks! Cannot trust Nepali banks as who knows their CEO might transfer all the money n run away! Cannot trust Nepalese nowadays when it comes to money!