To NightmareKnight1, it'd be a disservice not to have her show up, but certainly not for a good while. I want that introduction to feel organic, with the same panache I've put into the rest of this story.
As for the other thing, that's bound to be funny as hell, but my understanding of the Fate series is too limited for me to be comfortable with writing anything more than a reference or cameo. My No.1 rule is not to write in anything I myself don't already know about, otherwise any sort of worldbuilding looks like regurgitated Wiki entries.

To LoamyCoffee, the title is doubly-funny on that front because Shouta was often made to wear girl's cosplay; moreso in the manga and spin-off manga than in the anime.
As for the Ojou-sama and her friend, they're from Nurse Hitomi's Monster Infirmary, indicative of the cryptic comments from the lunchtime scene about "source material"~
And Aesthetica of a Rogue Hero was a big inspiration for Aetheria Academy (though by aesthetics it looks more like Mahora Academy from Negima because the whole "World Tree" vibe is too good to pass up on); something that made too much sense in this "Soft Dungeon Crawler" world not to put in. And of course, the reason being an "Adventurer" isn't as glamorous in this MHA world as it is in dedicated "Dungeon Crawler" storylines is because there's less "exposure", and most of it is just regular grunt work like mining or pest control.
And YES! EXACTLY! Scans are nice, but there's just something so soothing about actual paper between fingertips. Just finding the manga sets at MTAC and used book stores are among my fondest memories. Stuff like Negima, Rosario+Vampire, Black Cat, and most-recently Hellsing~
As for Hanako's safety, Lore-wise, I think Lucoa is more-likely to turn her drinks into water than actually imbibe; what with what happened with her sister on the temple dais… Which makes me all the happier I've read the manga even if I am caught up.

To Theboblinator, part of the reason for that particular Flavor Text is because he doesn't consider all the world's problems "his problems" unless he's tangibly involved. He's more than willing to just be a normal middle schooler, in an abnormal world, if trouble didn't keep coming to him like some kind of "Anti-Delinquent".

To GreedEman, I think I have Dredge on my Steam Wishlist. Also happy for someone else to know what Dave the Diver was~ I love how hammy and chill it all is; especially the "reactions"~

minh180621: Can AFO even pull his usual Demon Lord bs? With legit Hero come back from other world, dude sound like free exp. Or perhaps he is also a Isekai-er. Let be real, his quirk looks like a cheat, and he has his own series.

Re: Canon All for One? Oh hell no. Fanon All for One? Most certainly.
An important lesson I learned with my Teen Titans fanfic, courtesy of a lengthy Review that was actually constructive criticism instead of outright flaming, was that the Villains should always be elevated to the level of the Heroes and beyond, otherwise there's no "conflict". Yes, there's Rifts to other-worldly resources and even "Drifters" from other worlds and maybe even some "Reverse Isekai Protagonists" hanging around, but that also means there's "DLC" (as Shigaraki would put it) for him to skim the top off of.
And as I pointed out with a bit of Miss Kobayashi's Dragon Maid lore, the Mana Purity on that Earth is canonically less-pure than in the Chorogons' home dimension, so it only makes sense that the "Drifters" that got their powers in dedicated magic worlds would be somewhat "lesser" upon their return; hence the need to gather together in a small city-state comparable to Mahora Academy.

To TacticalBoop, I've been there too; binge-reading stories into the night when I should've been sleeping. It's flattering to hear, too. Of all the people who've binged my works, no-one yet has said they lost sleep over it~
And yes, I'm ultimately building up to Canon. Not exactly a "Villain of the Week" formula, but certainly more Slice-of-Life until dedicated Battle Shounen. And since Takei is a Self-Insert, there's gonna be a lot of meta-commentary about the Isekai Genre; doubly so-since, like I pointed out in the Summary, the MHA world is exactly the sort of place someone would get "Isekai'd" to, what with all the racism. And for the last thing, I don't think it's so much something in the water that makes women thirsty, since, it being Japan, both genders are going to be quite "parched". Japan did invent Tentacle Porn, way back in 1814~
Gross.

P.S.
I've updated Chapter 46: CHARACTER BIOS to include new terminology in the wake of my first major Counter:Side crossover. Bringing Counter:Side into this world wasn't the plan from the beginning, but my worldbuilding is flexible-enough I can work in new ideas if it doesn't conflict with already-established Fanon.

But I digress. On with the show!

*Past*

"Take-chan~"

"What is it, ojii-san?"

"I've just made you the beneficiary of my will~" the Jet Hero grinned a stupid grin.

"Gee, I wonder why," I deadpanned as I followed his gaze to where Elma and Lucoa were gabbing like hens in the dining room, their flame sacks bouncing and jiggling as they recalled witty anecdotes in Nahuatl; the langua franca of the Aztecs.

Only reason I knew what that was called was because I wanted to see how much of a candle the myths held up to the real thing.

Spoiler Warning: they did not.

"I thank Kami for letting me live long-enough to see the promised land~"

With how-much of a toll Hero work took on his body if the old photos of him in his "youth" are any indicator of, I'm amazed he can get it up at that advanced age…

Then again, so could Master Roshi, and he's even older.

*Present*

"I'm… sorry to hear that…?" Hanako blinked at me over the phone.

"Nothing for you to apologize for. I just can't believe that Lucoa of all people came out of that damn cauldron."

"I can't believe she's actually Quetzalcoatl," the closet magical girl hummed.

"Well, at least you don't think she's a Succubus anymore~"

"Jury's still up on that one," she said refusing to meet my gaze for a moment. "But… having a Tsukaima is a sign of a good mage, so it isn't all bad," she smiled. "Laura's actually thinking of taking me into the basement-"

"What's in the basement and how much should I be worried?" I asked when the girl clammed up.

"Erm… Can we please change the subject?" she pleaded.

"Yeah, okay," I hummed. "You ready for the big dance-off in gym tomorrow?"

"I'm a little nervous…" she admitted. "I'm afraid I'll look foolish."

"Just put some of that 'Yuna Springfield' charm into it and I'm sure you'll do fine," I returned, causing her to smile. "The one I'm really worried about is Shizuru."

"Oh, yeah, I mean… How're they going to grade her?"

"Thermal imaging camera?" I groused. "Then again, Hitomi-sensei can see her just a bit. Certainly more than I can…"

"Maybe it's from your magic?"

"No, no, I could 'see' her well before Elma started making me her bootleg Lao Mang Lone Soup."

"Lao Mang Lone…" Hanako hummed rolling the Chinese on her tongue.

"It's nothing, don't worry about it," I sighed.

But damn did that reference make me feel old...

"Maybe I should've taken you up on your offer to form a troupe," Hanako hummed.

"Well, too late to do anything about it now. Dance-off's tomorrow," I hummed, thinking back to the after-school sessions with my gal pals. Especially Shiori and Kuromi who never let me hear the end of it when I decided to leverage my 'insider knowledge' the way I had to get out of making something from scratch.

More on that later.

"Maybe next time?" she asked hopefully.

"Next time, for sure," I nodded in turn, holding up my pinkie to the camera.

Hanako in turn blinked before letting out a cute giggle, extending her pinkie to the camera with a smile on her face.

*AHA*

"Alright, class. Today you'll present the dances you created or learned to the class," Moji-sensei announced the following day in the gym, a bluetooth speaker set to the side. "Oh, there you are, Hitomi-sensei. Thanks for coming!"

"Moji-sensei, is it really okay for me to do the scoring for Tomei-san?" the mono-eyed nurse asked, eye turning toward the familiar girlish silhouette intermingled in the crowd.

"Well, since I can't see her, it's the only way we can grade her," the Wookie-like man apologized. "Speaking of grades, what do you make of Takehiko-kun's choice?"

"I'm amazed he picked something so-specific. Then again, he does have the dance partners for it," she hummed turning toward Takei who was standing with Shiori, Kuromi, and Yomi, watching the dance they'd been practicing one final time, a bit of makeup around their eyes to make them look more like undead than two of them already did.

"I mean, I did say if you weren't going to make a dance from scratch, you couldn't do anything recent," Moji-sensei said scratching the back of his head. "I doubt anyone with a lick of sense would call two-hundred years ago 'recent'."

"He also sings a mean karaoke," Hitomi smiled.

"Hm. Karaoke does burn calories… I'll see if Gordy still has that karaoke machine from the lost and found the next time we have bad weather."

"I'm surprised you're calling him that instead of his real name."

"Well he seems to like it, and it's growing on me," the Wookie-like man chuckled. "He actually showed me the old sitcom Takei took the name from. The 1990s really were a good time for television," he grinned before coughing into his hand. "Alright, everyone, have your music and your partners ready if you have the latter. It's time to get dancing!"

*AHA*

Cue "Thriller" by Michael Jackson

The dance that Takei's ingroup had chosen to perform for the class was by far the oldest. Thriller, the sixth studio album by legendary American singer and songwriter Michael Jackson, released on November 29, 1982 by epic Records more than two centuries ago. The song in question became Jackson's first number-one album on the US Billboard Top LPs & Tapes chart where it spent a record 37 non-consecutive weeks at number one, from February 29, 1983 to April 14 1984.

In addition to the dark eye makeup which they all wore in exception to Kuromi, Takei had also thrown on a red jacket in reference to the music video directed by John Landis. Yomi in particular was grinning ear to ear, practically made for the dance since in the music video, the dancers were mostly undead, and she was the closest thing-to without a WHO warning label/designation.

Suffice it to say, the four of them stole the show as an impossible act to follow; a fact reflected in a general lack of enthusiasm for most performing in the timeslots immediately after.

Thankfully for those this applied to, Moji-sensei recognized this fact and instead chose to grade them on the effort in preparedness prior to today.

Of course, though the song Takei's group danced to was the most-iconic, even in the twenty-third century, an even bigger eye-opener was the interpretive dance performed by Tomei Shizuru, sounding like something from Mozart's time but by a composer from that century.

*AHA*

"Do your best!"

"Yeah, even if we can't see it!"

"She might be invisible, but she sure smells good!"

"Hitomi-sensei can see her, right?"

"If you squint, you can just make her out…"

"Go, Tomei-san!"

"Shyness and transparency vary based on the individual, but if you lift your head and look around a bit, the world might look back."

These words the day prior from Hitomi-sensei came immediately to Tomei Shizuru's mind as she stepped out in front of everyone. Peering through her bangs at the crowd, the felt the lepidoptera in her stomach settle down as she met eyes with Takei, the cat-eared teen giving her a thumbs up and a grin.

"My… My dance's theme is… 'Butterfly'."

As the light, flighty music began to play, Hitomi's sole eye on her and colored a vivid violet, Shizuru asked herself what her heart wanted, what she wanted to become.

Amidst these thoughts, her mind flashed back to the things people had said about her. The time in kindergarten when one of the kids pointed out she was covered in freckles, the time in elementary school where no-one could hear what she say, all the times a teacher had to apologize for marking her absent when she'd been there the entire time.

But through all that, in all the time her Quirk had been out of her control, the thing she wanted more than anything was to be seen.

With Hitomi's violet and Takei's green eyes on her, as she twirled about, her face hot as she felt their eyes on her, the young woman slowly became translucent.

*Chatterchatterchatter*

"Huh…?"

*Chatterchatterchatter*

"We can see her…?"

*Chatterchatterchatter*

'They can see me… Their eyes are on me…'

"Wow… She's see-through! It's so pretty…!" the girl who danced before her and had bumped into her immediately after, Shitara Nobuko, gushed at the sight of it.

As she twirled about, Shizuru looked like a glass butterfly, revealing budding curves, back-length hair and eyebrows colored a middling shade of gray, silver eyes peeking through long bangs and fluffy eyelashes, a line of freckles across her face that was quite charming.

'The spotlight is hot… I'm embarrassed… but… I am here…' she thought as she twirled, her face reddening. 'I'll cast off the chrysalis hiding me away… and spread the wings I've kept closed. This is me, just me… Look closer…'

As she pleaded for everyone to look at her… to see her… the young woman failed to notice that while she had become fully translucent for the first time in years, her clothes seemed to have missed the memo…

"OH MY GOD! SHE'S VISIBLE!"

"WE CAN SEE EVERYTHING?!"

'To think that being seen… would be this…' she blushed, still not realizing.

"OI! PERVERTS! EYES DOWN!" Takei shouted as he leapt out in front of Shizuru and shielded her with his body, his flushed face bearing an expression that caused the more-perverted of his peers to avert their eyes.

"Tomei-san…? Um, Tomei-san?!" Hitomi cried running over to her, pulling the white lab coat from over her tracksuit and holding it out.

*AHA*

After that little fiasco, Hitomi, Takei, and Shizuru's friends all formed a living wall around the formerly-transparent girl before escorting her to the nurse's office.

Given her Quirk, [Transparency], had remained activated due to the trauma of that Villain attack at a young age and it covered the clothing she wore, a concession for being allowed to go out in public despite her Quirk's continually active state was to wear an ankle tracker whenever she left the house. Invisibility Quirks were rare, but not so rare that there wasn't already legislation in place around them, so now that Shizuru had gotten enough control of her Quirk to not be fully invisible, her case would have to go back under review.

Of course, the present issue lay in the fact that while her body had become visible for the first time in years, her Quirk had gone into a sort of "feedback loop" rendering her clothes invisible as she wore them, which in of itself was its own problem.

"You there! Eyes on the wall!" Takei shouted, his 'Anti-Delinquent' reputation causing the student to squeal and run face-first into aforementioned wall. "Shizuru, how're you holding up?"

"I-I'm still wearing the Emperor's Clothes."

"Oh? Didn't think anyone else knew that reference."

"The Emperor's Clothes?" Hitomi blinked.

"It's a really old story about a profligate king who gets swindled into wearing magnificent clothes that are 'invisible to those who are stupid or incompetent'. No-one wanted to admit they couldn't see the clothes, so the king wound up walking around town buck naked."

"Sounds like my worst nightmare," Nobuko deadpanned.

"Sounds like everyone's worst nightmare," Tabe added.

"I'm really sorry about this," Shizuru apologized, hand fisting the back of his shirt.

"Nothing to apologize for. If anything, I should be apologizing to you for freezing up like I did. I should've stepped up sooner."

"But you jumped in front of me in the end," Shizuru hummed as she stepped forward and embraced him, pressing her blushing face into his hair. "It… made me really happy~"

"Erm, Tomei-chan, your clothes…" Hitomi coughed, her and the others aware of how it looked.

"EEP!"

*AHA*

"So, how's the young lass doing?" Picar-sensei asked, he and Takei standing outside the nurse's office.

"Well, we finally found out that skin-tight clothing isn't included in her new 'Area of Transparency'," Takei hummed. "Of course, that pretty much limits her to school swimsuits and knee-highs…" he deadpanned.

"Well, thankfully her Quirk has been well-documented," Picar hummed as he rubbed his head. "Still, going to and from school in such an attire will draw… unwanted attention, even in a safe neighborhood like ours. A neighborhood grown less-safe now that the Mon Squad isn't here as our own 'deterrent'."

At this, Takei raked his fingers through his hair before letting out a long sigh.

" . . . Mitsumi's been commuting with her new Student Council members to school, so I'll just escort Shizuru in the mornings and evenings instead."

"You'd really do that?" the man blinked.

He'd honestly planned on calling in a favor from his former Agency from back in the day, but if Takehiko was offering…

"I know exactly the sort of people that'll prey on a girl walking the streets in a skintight swimsuit. If I left a girl that fragile to her own devices, it'd leave a bad taste in my mouth…!" the Lombax-like teen growled chewing on his thumb. "Least-pervy alternative I can imagine is a full wetsuit, but that still leaves her pretty… curvy."

"I'm well past forty, so I can't legally add commentary without getting put on some sort of list, but I'm sure her guardians will appreciate the sentiment."

"What makes you say that?"

"I'm sure you just left a good impression on the lass after she literally caught your eye. Maybe that's why you had so many parents speak up for you in the PTA meeting after the 'Ogre Episode'," the bald man hummed.

"And it's really alright for me to be here?"

"Even if you specifically aren't here, it isn't unheard of for Villains to come to junior high schools and target people with absolutely nothing to do with Hero society," the man replied. "Most of them are just more-subtle than those two…"

"Yeah, nothing subtle about fake cops and roid rage," Takei deadpanned. "I mean, at least she'll be able to take off that bulky ankle tracker now that she isn't 100% transparent."

"An unfortunate truth, but a necessary compromise so she could live a normal life," Picar replied. "Too many people with far lesser Stealth-class Quirks have abused theirs in the past. Maybe it's hard for you to believe, with how-often we've failed you, but us adults have been running this super-powered society for a good while, and we haven't run it into the ground quite yet."

"Only just as far as technology is concerned."

"You know, I actually wanted to be a starship captain growing up, but by the time I came of age, little progress had actually been made on interstellar flight," the man confessed. "Maybe that's why I styled my Agency building to look the way it did," he hummed holding out his phone, showing a photograph of the ribbon-cutting ceremony for the Starfleet Agency; the majority of the building was an ordinary high rise, but the upper floors had been remodeled into a flying saucer-like shape, complete with running lights and glowing engine nacelles.

"Hold on, could that thing actually fly?"

"Oh, if only," the man chuckled mirthfully. "It's still there you know, just in the hands of my successor."

"What kind of work did the Starfleet Agency do?" Takei asked curiously.

"A little bit of everything, though eventually our specialty turned towards cooperating with the RDA and STMO. We even got a Taskforce license, boldly going where no man has gone before," he sighed wistfully.

"You've gone into those things?" he asked incredulously, shuddering at what was probably the memory of his first encounter with a C.O.

"Once or twice personally, but for some reason it seemed like the ones in the 'Redshirts' were always the first to die…"

At this Takei could only snort.

"I'm sorry. I'm sorry. Inside joke."

"It's alright, young man. At least they died doing what they loved, instead of a more ignoble death like having a kitchen sink or even a flower pot land on their heads. I even heard of an up-and-comer who died because a pigeon dropped exploding 'yogurt' on his head."

"And I'm sure the internet is just filled with 'Epic Hero Fail' montages," Takei chuckled. "Well, if I can't Intern with the Mon Squad, think you could write a letter of recommendation for Starfleet?" he asked with mirthful eyes.

"All you need do is ask," the educator nodded with a fond smile. "You're a good friend to those around you, and I'm sure Tomei-chan will need that now more than ever."

"I won't let you down, Captain," the young boy said cutting a salute.

"At ease, Ensign," the educator chuckled before he turned on his heel and departed.

*AHA*

The above is somewhat taken from Nurse Hitomi's Monster Infirmary, but with a little My Hero Academia worldbuilding thrown into the mix. And for those more-astute in my reading audience, you can probably predict that Shizuru Tomei will be replacing Toru Hagakure at Yuuei. Not that there's anything wrong with Toru specifically, I just think that Shizuru's character arc is more-compelling in comparison; a benefit of being able to build her and people like Tetsutetsu and Itsuka up from their junior high school days.

Unrelated note, back before Toru Hagakure's real appearance was Canonized, I had it in my Headcanon that she basically looked like Kana from My Lovely Ghost Kana. And ultimately that was part of her charm that Canonizing her appearance took away; the fact that she could be drop-dead gorgeous, a plain and frumpy girl, or anything in-between, and what she looked like wouldn't have "mattered" because even when she couldn't see herself, she was still always "her best self".

But I digress.

I also had a ton of fun elaborating on Picar-sensei's place in the My Hero Academia world in relation to what he did before becoming an educator in Nurse Hitomi's Monster Infirmary. The whole "Starfleet Agency" spiel wasn't in the initial draft, but that's just how it goes sometimes; I have a "Brain Blast" and come up with something (I think is) brilliant. It helps that the Rifts are just the sort of thing that canonical Starfleet would also be into.

The "Redshirts" joke was also something I had fun adding in, even if the only Star Trek property I've actively watched was the Star Trek: Lower Decks incarnation.

Anywho, a little bit of Slice-of-Life goodness before another training montage. Hope to see you then.

WHICH IS RIGHT NOW 'CAUSE THIS IS A DOUBLE-RELEASE!

GOTTA BLAST!