Doubt!! (en) is a psychological horror manga about a rabbit named Rabbit who wakes up in a strange building with several other people, each wearing a different animal mask. They quickly learn they are trapped in a deadly game of "Rabbit Doubt," where one of them is a fake "Wolf" secretly working to kill the others. The story follows the group as they try to uncover the Wolf’s identity while paranoia, betrayal, and brutal deaths tear them apart. Readers enjoy it for its tense, whodunit mystery, constant suspense, and the chilling way it explores how fear and distrust can turn friends into enemies.