In 1999, Pokemon: The First Movie was released by Warner Bros. and it opened to $31 million and grossed over $85 million domestic and $140 million worldwide. Demon Slayer: Kimetsu no Yaiba Infinity Castle just opened to $70 million, the biggest animated opening of the year and the sixth biggest September opening ever. These films tend to be very frontloaded, evidenced by the fact that few of them even go on to double their opening weekend. After more than four decades, Rob Reiner and the cast finally reunited for the sequel, Spinal Tap II: The End Continues. By those metrics, a $5 million opening for Spinal Tap II would have felt like a triumph for them.