Refulgence

"Refulgence" is a song by Shoujo Byou used in Katanagatari (刀語) as the anime's second ending theme. It is connected to White Fox's 2010 television adaptation, and its verified commercial release came later on Shoujo Byou's metaphor - EP, published on May 25, 2011.

Within a J-Pop frame, the song fits the compact shape of an anime ending, centering melody and a polished, atmospheric finish over sheer force. The title evokes brightness, and the piece reads as a closing cue shaped to leave a lingering emotional afterglow once an episode has reached its final beat.

That function suits Katanagatari, a period adventure driven by sword duels, strategic pursuit, and the shifting partnership between Shichika Yasuri and Togame. After stories built on Deviant Blade conflicts and political tension, "Refulgence" works as a calmer coda, while its later appearance on metaphor - EP places it clearly within Shoujo Byou's wider discography.