Citizenship

I Ashish Gurung want your help in the acquisition of Indian citizenship. I am born in India and have lived my life here only I'm 20 years old. I have completed all my studies here only; therefore, I want to reside, study and work here in India. However, I'm unsure whether I'm a citizen of India or Nepal. My family has lived here (in J&K) for more than 25 years. I have all my Indian documents and don't possess any Nepali documents however, during my birth both my parents were Nepali citizens thereof does that make me a Nepali citizen? So, I seek your help for clarification, if yes then please help me acquire Indian citizenship through naturalization here in India. I have all my documents to prove I have resided here in India from my birth till now (birth certificate, exam marksheet 8th 10th and 12th, my j&k domicile, aadhar, pan card, driving licence, voter id). The main problem is even for acquiring through naturalization I'm asked to produce documents related to my Nepali identity which I do no own! I have my parent's Nepali citizenship card. So, do I need to create that first? please guide me, thank you