In order to celebrate the special occasion, the singers got together to participate in numerous games when it was Highlight's turn to take on the relay mission 'Infinity Girls 100-second relay'.  Their mission was to complete the given tasks in a matter of 100 seconds.  With the timer kicking off, the members scrambled to master various acts such as performing situps together, going through a hula-hoop without breaking their hand chain, and building a human pyramid.

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Did they successfully tackle the challenge? Check the video above to find out or check below the following image for spoilers.

Spoilers: 

To the viewers' amazement, Highlight successfully tackled the challenge in just 43 seconds, demonstrating their impressive teamwork and inseparable bond.