Yami no Matsuei, Souryuu/Touda/Tsuzuki, resistance is futile
The bars of the cell are spaced just enough for a child to slip through, if the child were Tenkou's size perhaps. He hasn't gotten used to the idea of children yet. No matter the years that have past.
He's never looked at a wife to continue his line. Now he doesn't need to. The Emperor has given him the highest rank and two children to carry on his name. And taken the two best things to ever happen in his life. His best friend, exiled to a pocket dimension desert prison, and now Touda, his... his Touda, sentenced to life imprisoned, all traces erased.
That is the Emperor's will. Both were traitors after all.
But Tsuzuki's heart is greater than the Emperor's will. He takes what is otherwise forgotten and thrown away, and breathes life back into it. He digs out the black hell fire beast, argues for his parole, then grants him life in the very place he spent so long imprisoned.
He gave up on the snake and his heart the day these bars closed. He took the memories of their steamy trysts and violent battles and thrust them in a dark place to rot beside Touda's bones. Now he stares at the empty cell and has new memories. Memories of his master curling around Touda's head, regardless of the visor cutting into his hip as the snake drinks him down. The feel of silky soft strands, painfully short, slipping through his fingers and oiled tightness constricted around him.
He remembers the taste of Touda's blood filling his mouth because he refused to call out the beasts name when tormented release finally hit him.
The bars of the cell are only big enough for a tiny child. Or the power of his master's will.