LOS ANGELES – Whether UFC 213’s headliner ends in a quick submission or a decision, Amanda Nunes doesn’t care: She just wants a definitive end to the Valentina Shevchenko chapter of her life.

Although champ Nunes and Shevchenko have met in the octagon before, the circumstances have certainly changed. While their original UFC 196 fight was a rather straightforward three-round one, which saw Nunes come out victorious despite a late rally by Shevchenko, Saturday’s five-rounder has both a belt and bad blood involved.

Their beef may have only come to a physical peak in May, when the two engaged in an uncharacteristic altercation at the “UFC Summer Kickoff” press conference. But it’s been brewing for a while. Fueled, mostly, by the challenger’s remarks about how their original scrap may have turned out differently had it been a five-round affair.

On Saturday, Shevchenko (14-2 MMA, 3-1 UFC) will finally get those extra rounds. And Nunes (14-4 MMA, 7-1 UFC), in turn, will get a chance to settle any lingering doubts.

“Nothing can change the result of the fight,” Nunes told MMAjunkie ahead of the pay-per-view headliner at T-Mobile Arena in Las Vegas. “I beat her already. Nothing’s going to change it. The only thing that’s going to change is that this is going to be over Saturday – because I will beat her clean. (Whether) I knock her out, submit her, go five rounds, I will clean this, to get over this.

“I’d love to get a finish, but MMA sometimes is not the way you planned. If we go to five rounds, I will be good. As long as I beat her, clear, it’s going to be awesome.”

While their first fight didn’t directly carry title implications, it did leverage Nunes to a title shot against then-champ Miesha Tate. Nunes, we now know, made the most of that one, first mangling Tate’s nose and then locking in the rear-naked choke that finished what ended up serving as UFC 200’s headliner.

Nunes went on to defend the title against ex-champ and megastar Ronda Rousey, also in the first round, though this time via TKO. Again, she was in the headlining spot of a major event. And, having risen to the occasion both times, she is unfazed by the pressure of being once more put in the spotlight.

“This makes me stronger for this kind of situation,” Nunes said. “Being now at ‘International Fight Week’ is going to be awesome. I’m happy, and I’m glad the UFC did that. I will have fun and enjoy this moment of my life.”

Shevchenko, of course, hasn’t really been slacking either. After the loss to Nunes, she went on to headline two events of her own, earning a unanimous decision over ex-champ Holly Holm at UFC on FOX 20 and submitting “The Ultimate Fighter” winner Julianna Pena with an armbar at UFC on FOX 23. Both displays were dominant.

Ranked No. 1 in the latest USA TODAY Sports/MMAjunkie MMA women’s bantamweight rankings, Nunes isn’t oblivious to the fact No. 2 Shevchenko is no slouch. But, at the same time, she doesn’t really see a leap between the fighter who she beat a little more than an year ago and the one she meets on Saturday.

“Valentina is a pretty tough opponent, but I really know everything she’s going to bring that night,” Nunes said. “She had two fights, she comes with two big wins, but she’s the same fighter since we fought. She didn’t evolve in anything, she didn’t change anything. But it’s good, because she comes off two big wins and that’s good.”

To hear more from Nunes, check out the video above.

And for more on UFC 213, check out the UFC Rumors section of the site.