After Shanna, an actress and former Miss USA, won the Power of Veto and opted to keep Head of Household Chris Kirkpatrick's nominations the same, the house voted to evict Mirai over Chris Kattan in a unanimous 7-0 vote on Day 13 of the game.
Although Chris Kirkpatrick and Shanna were also working with the athletes' alliance of Miesha and singer and rapper Todrick Hall, the pair agreed it would be best for their game to keep Carson and Cynthia in the house.
Chris Kirkpatrick said he needed to win the Power of Veto in order to keep his nominations the same and keep both sides of the house happy.
"If Miesha takes [Mirai] off the block, there is going to be hell to pay," the HoH told Shanna.
Mirai then told Todrick how she was very loyal to him and Miesha and hoped to stick around longer so she could continue working with them and protect them. Todrick called Mirai "a very special person" and said he'd do anything to keep her in the house.
While doing some face masks, Chris Kirkpatrick acknowledged how he needed Mirai out sooner rather than later or else the numbers on Miesha's side were going to grow and her circle of allies may no longer include him.
"This Veto competition is going to define a lot," Shanna noted.
Miesha was rooting for Mirai to win the PoV and take herself off the chopping block. Miesha and Todrick did their best to convince Chris Kirkpatrick to focus his attention on Carson and look at his long-term game, but the former boyband member didn't want anyone else to control his HoH reign.
In fact, Chris Kirkpatrick suggested he'd even consider naming Todrick the replacement nominee if either Mirai or Chris Kattan managed to win safety or be saved by someone else.
The Power of Veto competition then commenced, and a random draw determined Todrick, Shanna and Cynthia would compete against the current HoH, Chris Kirkpatrick, as well as the two nominees, Chris Kattan and Mirai.
The competition dubbed "Marry Me" -- in honor of the new movie starring Jennifer Lopez and Owen Wilson -- required the participating celebrities to look at a series of images showing a large crowd of fans. Many fans were holding up signs, but only one fan would be holding up a sign that says, "Marry Me."
The houseguests' job was to quickly identify the section -- A, B or C -- that contained the "Marry Me" sign. For every correct answer, a houseguest would receive one point.
The houseguests with the most points at the end of seven questions would win the Power of Veto.
Todrick and Shanna tied with six out of seven correct answers, and so the pair had to go to a tiebreaker round.
Celebrity Big Brother host Julie Chen Moonves asked the two celebrities, "Rounding to the nearest hour, how long was it, in hours, from when the MON WON hat was revealed by Miesha to the moment Todd went on the block?"
Shanna guessed only 72 hours and Todrick guessed 180 hours when the answer was 175 hours. Because Todrick went over by five hours, Shanna won the Power of Veto.
At the Veto Meeting, Shanna announced she had decided to keep Chris Kirkpatrick's nominations the same, even though she thought both of the nominees were "lovely."
It then became time for the live eviction, and in his speech, Chris Kattan said Chris Kirkpatrick was right in saying the comedian knew very little about game playing.
Chris Kattan was essentially willing to fall on the sword for Mirai.
"I love you all and I think it's time for me to move on," Chris Kattan announced.
"[Mirai], you've been very dedicated to playing the game and it's been very important to you, and I've seen that for a while -- a couple of weeks. You've had a lot of traumatic moments and I think you should stay."