ペットは五神獣~千年後の最強3歳児~

Three-year-old Mia's five pets Lizardy, Doggy, Fishy, Chicken, and Kitty mysteriously vanish. Armed with her schoolbag and a Gatling gun, she sets out to find them, but time-travels a millennium ahead. Her former pets became five tribal leaders. Mia tracks them down, uncovers the truth, and unites with them to defeat a Black witch.