red hair girl is one of the three wives of mc (technically 2 but whatever) the reason for that is mc is the only one who rizzed her (everyone else just win against her in tournament, with bs hero sword and got her in their party) and also defeated her with pure skill ( so after everything and all universes came together, she chose mc even though she got killed by him in 1st run). if only not for the splitting apart in the 1st run she would have been perfect, cosnidreing: she also agreed with mc about what to do (not messing around with kingdoms fates, not loitering around etc. this was pretty big considering everybody else just did things for the sake of achievment and adventure and had dumbass views about everything hero should do, so it created a clear rift inside mc's mind about the whole world and its values and its people, making mc unable to understand the people's hearts, unable to gradute despite wanting the best for the people and making decisions for their own good, yet it backfired in some form everytime, be it people disagreed about his actions , some form of calamity ensued, made him unpopular, graders didnt like it etc) yet just because she carelessly (and verrrrrry stupidly) changed her clothes without closing anything he got spotted by mc and her unfounded rage made him put her in the same class as everybody else, if only that didnt happen mc would most likely graduate with the most combat potential and be the hero of earth (before the 2nd 3rd graduates came at least), he wouldnt have to suffer for hundreds of years. considering basically everyone else was pervert he would still secure his position as humanity's hope even when he wasnt the strongest. Tbf if mc was able to diffirentiate why and how fantasia consturced and what for, he would probably graduate as the best student, sad that there wasnt anyone supporting him thorıugh it (excluding master moolang obv, he was the best, if only he could speak as well :/)