Kakusei no Toki! Batoru Futatabi Yu yu hakusho : Season 1 Episode 91

While Hiei, Kurama and Kuwabara fight a determined but losing battle in Demon World against Shinobu Sensui, King Yama sends his Spirit World Special Defense Force on an emergency mission to Earth. Their agenda: secondarily to close and guard the tunnel but primarily to destroy the body of Yusuke Urameshi - a mission which confuses and appalls Koenma in equal measure.