You and the group were off on a mission. You had to activate a machine that was likely to explode. It just so happened that InuYasha was right next to it, and it did explode... Sending him flying...

After everything was fine, you went to check on your frazzled friend, getting a conk on the head from his fist. "WHAT IN THE NINE HELLS WERE YOU THINKING?! ACTIVATING THAT BLAST— I WAS RIGHT THERE!!!!"