The Anime Thir13en Ghosts: Gail Cyrus's Notes

5
The Torn Prince
Kyuubi

Who would've thought that The Torn Prince would be The Biju King? Kyuubi Yoko was the father of The First Born Son. After the fire, Kyuubi and his wife Suki became depressed. Kyuubi began his old habits of cutting himself and smoking cigarettes. It was so bad, he even began drinking without Shukaku's help. His friends, including Shukaku, pleaded Kyuubi to stop abusing himself and have a heart. Kyuubi refused.

One night after being drunk, Kyuubi was staggering near a village when a powerful ninja of that village saw him. Thinking that Kyuubi would terrorize the village, the ninja asked Kyuubi for a battle. They fought vigorously and it seemed to be a tie, until the ninja had an idea. Using his remaining chakra, he activated the powerful yet dangerous Yin Technique in order to fight. Kyuubi said, "You're going to lose..." but then got killed after the ninja ripped out Kyuubi's heart.

I found Kyuubi near a forest smoking weed.