A couple weeks went by and Moon decided that it was time for Izuku to be tested on her magic skills, so Moon sent out Baby. The test went easily in Izuku's opinion all she had to do was get an apple to the other side of the room which was easy. All she had to do to accomplice that task was use the Levitato spell to do it, which she did. Meanwhile Katsuki had been quiet, strangely so. Having left Izuku alone after the back of the school incident, much to Izuku's confusion and disturbed him to no end. The reason why though was because much to Katsuki's anger he realized that he loved Izuku. 'I can't love him eh her, it's only because he's a girl that I have these feelings towards him. That's why they don't count, I'm only attracted to his female form. If he was still a boy I wouldn't like him, right? No, don't think that. Stupid Deku, unlocking these feelings in me.' Katsuki thought, he then noticed her smiling at him with that beautiful smile of her's and waving at him which made him blush much to his own fury.
Star, Izuku and Marco decided that something had to be done about this monster getting attacked problem, so they decided to host an "I'm Sorry" party where the monsters would get a personal apology from the Mewmen for the monster's suffering. Now all Star, Izuku and Marco had to do was get the Mewmen on board and they were set. Which was harder to do than thought since the mewmen didn't think they did anything wrong forcing Izuku to get out the big guns, her mother. Why this was a big gun was because before becoming a housewife, Ms. Midoriya was a lawyer and a good one at that. Boy did she do a number on the Mewmens but they even after being convinced that they were in the wrong, were still hesitant to do it and the reason why actually had Izuku, Star, Marco and Ms. Midoriya stumped about what to do. The reason was "What if they attack us? What about all the years of fighting between us?" That was until Izuku said "How about I cast a spell that makes sure they won't attack you and as for the fighting let's just see with that one." The Mewmens still looked unsure but agreed to Izuku's plan. That evening "Welcome to the "I'm sorry" party." Izuku said to the monsters who started to show up and then said "Now before we begin, I have to make sure you don't attack anyone. So, get in line so I can cast a spell that will make sure of that." "How do we know that this isn't some sort of trap?" One of the monsters spoke up and said "If this was a trap then why are there no guards around, wouldn't there be guards if this was a trap. Not to mention there wouldn't be Mewmen citizens here if this was a trap." Izuku said, only for the monsters to look skeptical but they did realize Izuku had a point. So, they went in after getting zapped with a spell to make sure that they wouldn't attack. The party was in full swing as each monster was given a personal apology from each Mewmen. They were cake, games and snacks. It was a wonderful time, that was until Mina Loveberry showed up "Uh, who's her?" Izuku sayed, prompting Star to say "That's Mina Loveberry, one of Mewni's greatest warriors well she was but now she unstable. Uh no." "Monsters, monsters all around. Got to get rid of them." Mina said, only for Izuku to say "Wait they not attacking, I made sure of that." Only for Mina to say "That doesn't matter, they're monsters they deserve to be destroyed for merely existing." She said while transforming into her buff form. This prompted every Mewmen to defend the monsters including Moon and Izuku herself. Woking together they took her down. How, by Moon using her magic lasso to tie floor everyone else held her down while Izuku blasted her with an ice spell to immobilize her. This did not stop Mina in the slightest but it did get her to leave. "Why did you all do that?" The monsters asked, only for Izuku to reply with "I told you, this night is about saying "I'm Sorry."" She said while giving out that warm smile of hers which the monsters couldn't help but be comforted by "You know this doesn't change anything but it's a step in the right direction." Izuku was comforted to hear that answer, only for Star to say while hugging Izuku "You did it, you erased the horrible thing we did in the first battle of Mewni." "Thanks, now if you would excuse me. I have a spell to undo on all the monsters." Izuku said
That little party's effect spread like wildfire and the monsters retaliated by making gifts (the gifts were all furniture) for every Mewmen as a thank you for the apology. The Mewmens decided to teach the monsters how to grow their own corn as a thank you for the gifts. Soon the monsters and Mewmen went from exchanging gifts to exchanging pleasantries and their kids playing together. Mina tried to stop this growing comradery, multiple times but it just strengthened the bonds that were forming via them working together (which included Izuku) to stop her each time. Eventually after weeks and weeks of this they decided that the fighting was done (between the two sides) and decided to live together in peace, much to Mina's dismay. So, she decided to stage one finale attack. One where she would be wearing giant pieces of armor to attack but the monster, Mewmen and Izuku were ready for it as Izuku zapped everyone with their own giant armors. The battle was in the Mewmens, monsters and Izuku's favor alongside the MHC. The monsters, Mewmen, MHC and Izuka ganged up on Mina all of them fighting her. Evetually this was too much for Mina and she fell, Rhombulus wasted no time and crystallized her. "Why did you do it here, now it's stuck here." Omnitraxus Prime said, Rhombulus was about to explain himself when Izuku cut him off and said "Actually I think it's a great idea it's here, to symbolize the new era of peace between monsters and Mewmen." Everyone else cheered in agreement. "And this monumental day never would've happened without you Sunny." Someone said, only for everyone but Izuku to start cheering her name "Sunny, Sunny!" "Gosh, guys. All I did was throw a party; you guys did the rest of the work." Izuku said, only for Moon to say "Yes but without that monumental first step, this day would never have happened. Good going Sunny, you're already a hero in our books." "Sunny, Sunny!" Everyone went back to cheering, making Izuku feel like she did something good. Like she was a hero, maybe this princess stuff wouldn't be so bad "Ah, you guys." Izuka said