If you truly are searching for an work containing the exact string "shinseki+no+ko+to+wo+tomaridakara+de+nada" , it is almost certainly a one-off indie upload or an error.
Putting these together, the string looks like a multilingual mashup or a mistransliterated Japanese phrase combined with English/Spanish elements. Possible intended meanings: shinseki+no+ko+to+wo+tomaridakara+de+nada+original+new
In the evening, as the village lit lanterns, the child returned, a story of original new in their heart. The snow did not vanish; it had transformed, and so had they. If you truly are searching for an work
The lyrics tell the story of Ai Hoshino, the series' central figure, describing her "perfect lie." The complexity of the lyrics—switching between praise and the darker reality of the character—is exactly what leads to the misheard phrases like the one in the search query. The snow did not vanish; it had transformed, and so had they