Jutsu Synthesis - physical description

"Wah!" Naruto exclaimed when his eyes were overwhelmed by a blinding flash. For a moment, Setsuna became a beacon of intense light that forced everybody to close their eyes. It quickly stabilized, revealing the half-kitsune prodigy's transformation.
"That is…" Yurimi's voice was an awed whisper, for she had never seen something like it before. Setsuna's chakra glowed so intensely inside her body that it rendered her circulatory system visible to the naked eye; a body tattoo of pure white light. Her revealed tails were unfathomable meshes of crisscrossing tendrils of light. Tiny arcs of lightning escaped out of her pores and danced over her skin, and the red of her Sharingan eyes had changed to anelectric blue. Even as she exhaled, tiny blue sparks jumped out of her mouth with her breath.