Yuyu Hakusho, Vol. 8, 8 - Yoshihiro Togashi

Dr. Ichegaki's ultimate biological weapons are in the ring, but Team Urameshi is suddenly having a severe attack of conscience. After Dr. Ichigaki implants blood-slaver nodes in the brains of Master Mitamura's martial-arts students, Yusuke and company just don't have the heart to conduct their demon-slaying business as usual. Rated for teens.