...
"Solar Reaper!"
Right after Shin called out his Reaper's Retainer, Solus, who was silently circling around his body in the form of a speck of light, quickly broke free from the cycle and manifested herself behind Shin in her human form.
She stayed in there for a couple of seconds before turning herself into a light that suddenly fused with the [Yamato] that Shin was holding in front of his chest. And right after that, the sword took some changes from its appearance just like Shin's other Elemental Spirit Possession.
The blade of the [Yamato] suddenly turned gold as the life where the sharp edge and blunt part of it formed a pattern of a dancing flame. It was the same for the guard on top of the hilt as it turned into an ember of a flame. At the same time, there was a series of glowing runes on the surface of the sword, making it look exquisite.