Third season of Cardfight!! Vanguard G series.

For the invincible and basically happy punk lads Hiroshi and Toru, what they care about every day is to get a lot of attention from girls and to win the fights against the lads from other schools. Whenever provoked, they just go out fighting and settle the situation no matter what it costs.

This is a story about two sisters: Shizuru, is a high school student who is able to see ghosts while her younger sister, Mizuki, is haunted by these apparitions. Frustrated by their abilities, their parents decided to entrust the sisters into the care of their grandparents who live in the countryside. As they adapt to life in the countryside, Shizuru and Mizuki begin to learn about the importance of coexisting nature with these apparitions. (Source: ANN)

Azmaria Hendrick gives some background information on characters and the setting, with flashback scenes from the Chrno Crusade series itself. Released with DVD volumes 2-12.