it was a long and painful fight
It was a long, painful fight... (JP: 長く苦しい戦いだった･･･ [N]agaku [K]urushii [T]atakai datta...)
A meme originated from Castlevania's tool-assisted speedrun videos in which, as soon as the player defeats the final boss, they walk up to the outside and watch the castle as it fades away into nothingness. As soon as that happens, NicoNico's comment section will be filled with "NKT..." spam.