Routama-
Means Son Big True- looks identical to Sesshomaru, other then having Jet black hair, a red crescent moon on his fore head and markings. Oh and his eyes are red like Madara Uchiha's. He's a half-breed, but not a half-human like InuYasha. He's a Half-Inu demon and Half-Shadow demon, he is also Lord of the Northern Palace.
Mikori-
Means beautiful child Jasmine- While she remains human, she looks just like Kagome, but instead of black hair, she has Firey Red hair, and Glowing Red eyes. When she becomes a permanent Kitsune Taiyokai, her hair changes to a silvery color with red tips. Her eyes become sharper looking and the left turns golden, while the other remains red. She gains two black fox ears on top of her head with red tips, as well as having {normal-looking} pure demon ears where her human ones once were. She also gains 12 black fox tails, with red tips as well.
On top of all these changes she also received one very important family trait, one that made her of royal blood and also scares Routama a bit. It was... her facial markings.
Auther:
But your gonna have to read the rest of the story to find out what markings exactly! :)