In Jainism, "Uparjan Vathya Punya" refers to the sudden or unexpected loss of accrued punya (merit/good karma). Regarding the name starting with "N," you might be referring to the various types of Punya and Pap, or perhaps specific terms or stories.

However, in Jain scriptures, the main types of "Punya" (merit) and "Pap" (demerit) are classified based on their causes and effects, not usually by names starting with specific letters. Also, the concept of "N" as an initial letter does not directly correspond to a specific type of punya or an entity that causes the sudden loss of punya.

If you are referencing a specific Jain term, story, or doctrine, could you please provide more context or clarify your question further? This will help in providing a more accurate Jainism-based answer.