COWA! (Shonen Jump Manga)

A contagious Monster Flu is spreading around town like wildfire. Can the town's troublemaker, a half-vampire, half-werekoala and his friends get the medicine in time to save everyone?!

Paifu, a half-vampire half-werekoala, is always getting into trouble with his best buddy, José the ghost. But when the Monster Flu sweeps through town, the fun and games are over. If the sick monsters don't get the medicine they need in a month, everyone will die! With all the adults sick, it's up to the boys to get the medicine and save the day! Paifu and José are off on a big adventure, but will they get the medicine in time...or will they become victims themselves?!