Pre-canon. How Fuuga came to part, and how Kazuki came to leave.
Saizou named him Prince of Terror. Kazuki never objected. It was true enough, and if some of the terror that had lodged in his bones for years seeped out to touch the people they fought, the ones who threatened even the tiny corner of life he had managed to cling to here… well, perhaps that would mean less for him which was all to the good as far as he was concerned.
After the Kami no Kijitsu arc, Juubei brings Toshiki home to Kazuki and the three of them fit themselves together with a little more honesty and understanding this time.
"Do you object?" Kazuki murmured, knowing eyes holding his, and Toshiki flinched under that question, reminded now of exactly why he had followed Kazuki so long. That one question was everything he had tried to take by force from Kazuki, everything Kazuki had no need to force from him, laid bare as a drawn blade between them. He closed his eyes.
"No."
Toshiki needs evidence that he’s wanted and welcome by the one who brought him back to Kazuki.
Toshiki knew what he wanted; he just didn’t know how to ask for it.
Saizou has been watching Kazuki and the others only from a distance, and Kazuki finally corners him and convinces him that his proper place is with them again.
Kazuki felt a stray breeze brush his cheek and sighed. Saizou seemed determined to be the most troublesome one of all for him.
Juubei had been the first to detect him shadowing them, never coming close, only watching, but never leaving them. Kazuki had tried, once or twice, to drift closer, but every time Saizou slid away. Thinking about it, Kazuki didn’t suppose he was actually surprised.
Kazuki takes Toshiki to bed thoroughly, to reassure him and to work out his own understanding of what he is to Fuuga.
Toshiki liked being with Juubei, cherished the opportunity to feel wanted, needed. He liked it when Saizou was with them, because Saizou knew that sometimes you really did need to laugh, in bed. But sometimes it was good to belong only to Kazuki, for a while. That was how he thought of it, anyway.
He hadn’t realized that Kazuki knew that.
Fuuga celebrates Spring and the new year together.
He’d had to threaten Juubei with a celebration at home, with Juubei playing the Oni, before he agreed, but once they were in the middle of the laughing, shoving, shrieking crowd Juubei lost his stiffness and shoved back with a will. Kazuki laughed as much at that as at the scramble for thrown candies.