Oshiri Tantei the Butt Detective

Oshiri Tantei, which translates to 'The Butt Detective' is a popular children's book series in Japan that was first published in 2012. Each book title begins with the words 'Fart fart!' in Japanese. The main character is 'a perfect English gentleman' whose face is a backside. The grand opening of the new curry food truck is only days away, however the magic spice for making the curry has gone missing! Let's solve this mystery together!