BOYNEXTDOOR has unveiled a special collaboration single with the legendary cartoon Tom and Jerry. The track "Say Cheese!" (SAY CEESE!) was released on major music platforms at midnight (KST) on November 10.

The song celebrates the 85th anniversary of Tom and Jerry, portraying the joy and loyalty of best friends through a playful, game-inspired narrative. Its lively rock-and-roll sound blends upbeat hip-hop drum beats, gritty blues guitar riffs, and a mischievous melody for a fun, dynamic mood.

Originally aired in 1940 by Warner Bros., Tom and Jerry remains one of the most iconic American animated series, depicting the hilarious rivalry and friendship between the mischievous cat and mouse duo.

This collaboration follows BOYNEXTDOOR's growing popularity in Japan. Their second single album BOYLIFE topped the Oricon weekly charts in two categories and earned Platinum certification from the Recording Industry Association of Japan. Their recent solo tour in Japan also sold out every stop.

BOYNEXTDOOR is set to perform on the first night of the 2025 MAMA Awards at Hong Kong's Kai Tak Stadium on November 28–29.