Yusuke Jo! Genkai He no Kanashii Shiren Yu yu hakusho : Season 1 Episode 63

Younger Toguro's invincible demon body craves a good fight, one it hasn't been able to have in a long long time. If reaching that goal takes beating more power out of Yusuke or threatening the lives of everyone in the audience to provide the boy with enough emotional incentive, then so be it. Among those suffering, violence-overload puts Keiko in shock.