I think you should have Ritsuka summon Kingu next and then have him beat up Mineta for “Defiling his little sister’s honor” haha

Maybe you could try something different like bnha world is a new world visited by Sieg and Jeanne after the end of fate apocrypha.

Or Izuku will be master in Chaldea?

And Izuku has no magic but has anti magic sword?

You could try something like shirous summons but fitting different bnha characters into class containers seeing with classes fit them best

no prob. don't worry about it.

Please don't get rid of Izuku's heroism. Because I read a lot of crossover stories that one of the main characters of the story is easily forgotten like a side character, like most of the crossovers between Naruto and Highschool DxD which Naruto always made godlike and smart, while Issei became an easily forgotten character.
Please don't make Izukun like that.
Maybe you can get Izuku involved in the world of mage craft, or Ritsuka calls a version of Izuku that can use mage craft. Izuku who turned out to have anti-magic against the influence of magic, Izuku who became a class beast in the future and returned to the past to do something.
Please bring up Sieg and Jeanne!
Izuku might potentially become a master.
I think it's not bad idea to pairing Izuku with Ritsuka or Mash, both of them is alright.

Good character

Well Ritsuka’s mere presence put a huge hole in the League of villains planes. Because, with her telepathy with the outside world it set a time limit for them.

Cu and Avenger are going to go nuts and enjoy themselves when they get there.

Cu it’s literally capable of fighting entire army by himself according to his legend. With battle continuation he could probably last long enough for help to arrive. Add in his Spears two most powerful attacks, their is only two among them I can she Ireland child of light have major problems against. The Nomu and demon god pillar.

As for Count of monte Cristo he is a solid counter to both the Nomu and their portal Man. Avenger can curate flames that can burn someone’s soul. If you look at Avengers Battle with a vampire, endeavor vs any Nomu, and the fact Nomu’s has no form of soul protection he would be one of the best options against a Nomu in both series.
The Count of Monte Christo speed would allow him to poll a Grand Torino against there ride.
Plus, if the league of villains somehow does kill someone he could just uses his third NP as it’s essentially an extra life for an away, and even comes with a temporary power boost.

I wonder how this will end. I mean, aside from the top villains once the Servants come they can easily defeat these losers. But I can't wait to see how Mash and itsuka deal with Lev and the mystery lancer.

you know if ritsuka able to use all of her servant like that(i mean making all of them fight at the same time), shes too op... in my opinion
i would like if you gives her a little bit weakness... like overused her mana or something like nosebleed... as long it makes her more human and less monster...
so that she can train to use them more efficiently (did i spell it right?)...

Quick correction : Chaldea Security Organisation is located in Antarctica, not in the Arctic (which makes sense if you consider that the Arctic is basically a giant iceberg, and that Chaldea is on a mountain)

I'll cast my lonely vote for Benienma.
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Jack has her Information Erasure skill. Any information about her will blur out. No one (except master and servants that jack trust) would be about to recall Jack's appearance despite meeting them.. Memory would fade out from their mind. Getting paperwork for Jack would be impossible from her skill blurring out all information.
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Mikon wife power training for girls (Master too young to be Husby)
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Emiya randomly working in a restaurant or cafe to pass time.

Last night, im re read from chap 1 and i have to say for Ritsuka's safety, Gudako shouldve be kept in that cage(?). I mean its almost 3 months i started to play FGO and summon rate is absurd.
seriously i only got four of four star servant (minus the one i got from event) (but one of them got turned into exp for mash, i missclicked, poor assassin of shinjuku). And Ritsuka manage to summon a lot of 5 star servant without getting that cursed black key.
i kinda afraid what will happen to Ritsuka if she ever meet Gudako.
aside from that, i look forward the reaction of ritsuka and mash when they meet the servant allied with Shigaraki.

Good character

Two lancers have been captured, and one has found sanctuary in a maid cafe. The one place where he can defend himself and maybe satiate Beowulf‘s blood lust for a little while.

So The students just learned how exhausting Ritsuka’s summoning is afterwards. From a legal standpoint.
I feel sorry for her when hundred face Hassan pops up. As she will I have to fill out a description for every single face and personality they have.

Christmas skill, and leader ship at work. Mordred might not be fit to be king in saber’s eye, but she dose have some leadership abilities. Considering Mordred likely lead a few missions before her Secret was out, and part of the enemy army that destroyed Camelot and it’s king can be attributed to Mordred to some extent in it’s formation.
Plus, charisma is a pretty good skill when dealing with people.

Lastly things are getting interesting with A trip to Antarctica. With what could be described as a miracle in terms of Scientific and imaginable successes underneath the ice. The only problem is trying to get it out, fixing it, and find people willing to go to penguin town.

Now i bet the next chapter is going to be crazy the hound vs king hound and cu has the right to fight probably my vote is cu winning having Protection of arrows, disengage skill and battle continuation giving him enough chance to survive and win while Beowulf get more stronger for a small amount of time with his berserk skill and use his intuition to find exploits against cu and also has battle continuation my money is still on cu because he has alot of defensive abilities and skill if you add his rune craft is better then what Beowulf carries

Oh Nezu is not ready for Jack's tale...by I have a feeling he's going to be offering himself up as a hug plush often after this

I vote for Astolfo.