For Kurama, almost everything is. His comrade (take note, no relationship here) Hiei found him living in the human world, Ningenkai, as an ordinary person. Originally, Kurama is well-focused on his studies and his family, especially because he was close to his human mother. That is, until he met Yuusuke. POWER IN THIS FORM
Venturing with Yuusuke, Hiei and Kuwabara into Makai, the demon world, Kurama uses the Rose Whip and later join Toguro's tournament. He has the power to control plants. In the ultimate battle against one of Toguro's powerful henchmen, although he transformed into Youko, Kurama would finally defeat the enemy back in this form, although he would lose in a technicality (fell at the count of 10.)
VICTORIES, OF COURSE
Count on it until the very end. His astonishing defeat of Shigure in Yuusuke's tournament in Makai came from the power in this form, even if he had the opportunity of transforming back into Youko. He was smart and his strategies usually made him win. Kurama, would in fact, choose being Kurama and his new life rather than be Youko again. This, he revealed to his old comrade in Makai, Yomi.