When it comes to falsifying one’s background, the case of the former U.S. Representative George Santos is still fresh in our minds.

In Japan, however, the story that briefly made headlines last year was thean academic credentials scandal involving the incumbent Governor of Tokyo, Yuriko Koike.

In Japan, however, thea similar story that briefly made headlines last year was the academic credentials scandal involvinged the incumbent Governor of Tokyo, Yuriko Koike, and her alleged academic credentials scandal.

Slight restructuring improves flow and avoids passive phrasing ("was the scandal").

She was criminally charged on suspicion of falsifying her educational history.

Grammatically fine, but in reality, it’s unclear whether she was formally criminally charged or only accused. If it's only an allegation, "faced allegations" would be more precise.

Although she claimed to have graduated summa cum laude from Cairo University and even released her diploma, multipleseveral flaws in the document have beenwere pointed out.

“Were pointed out” is a more appropriate past tense for a past event. “Several” slightly softens the tone and suits formal writing better than “multiple.”

Moreover, according to a professional Arabic interpreter, her Arabic assessed her proficiency ias atcomparable to that of a two-year-old’s level, and an Egyptian journalist claims it’stated it was roughly equivalent to having studied for six months of study in Japan —making it inconceivable that she could have graduated, let alone as themuch less as class valedictorian.

Replacing “claims” with “stated” adds formality. “Making it inconceivable” remains effective, while “much less” sounds more formal than “let alone.”

At a press conference on June 18, 2024, an Egyptian professor publicly asserted her innocence, giving the appearance that the doubts had been cleared.

You could slightly refine “giving the appearance” to “which gave the appearance” for smoother flow, but this is optional.

However, there are suspicions remain that this professor may have been acting as her stoogeproxy.

“Stooge” can sound too informal or emotionally charged; “proxy” or “spokesperson” maintains a more neutral and academic tone.

Meanwhile, public interest in the story gradually fizzled outaded.

“Fizzled out” is conversational; “faded” or “declined” is more suited to academic tone.

It is said that Japanese media were reluctant to pursue the matter, fearing a loss of advertising revenue.

This is fine, though consider specifying “reportedly” instead of “it is said” to enhance journalistic tone.

Reportedly, an Egyptian man, —a Cairo University graduate who holdsorking in a managerial position at a Japanese public organization —sayid that obtaining a Cairo University diploma through money or connections is entirely plausible.

(“say” to “said”) and clarifies apposition with em dashes.

A woman working as a researcher in the Cairo bureau of a Japanese newspaper explains, ‘Ied that if a politician were to orders, “'Make it look as ifappear as though this person graduated,”' then of course she’ll individual would indeed be recorded as havinga graduate, and a fraudulent diploma would be issued.

You might consider breaking the quote into two for readability, but it’s acceptable as is.

And a fraudulent diploma will be issued.’ There is yet another motive ais well: for Cairo University,also suggested: if thise scandal were to becommade public, they would lose face both at home and abroad, so at this point they cannotCairo University would risk losing face both domestically and internationally, making it difficult for them to deny that Ms. Koike graduated.

Condenses and refines structure. “Domestically and internationally” mirrors academic phrasing better than “at home and abroad.”

In short, it is saidsome believe that Cairo University and Ms. Koike are two of a kindcomplicit in maintaining the narrative.

“Two of a kind” is idiomatic and vague; this alternative is more formal and precise.

Did Sshe Gget Hher Ddegree Tthrough the Bback Ddoor?

I'm just nitpicking, but from my experience, when the "title" is a full and decently long sentence in and of itself like this, especially when it's a question, it's better to just capitalise it as such. News articles do this, for example.

Moreover, according to a professional Arabic interpreter, her Arabic proficiency is at a two-year-old’s level, and an Egyptian journalist claims it’s roughly equivalent to having studied for six months in Japan —making it inconceivable that she could have graduated, let alone as the class valedictorian.

Reportedly, an Egyptian man, a Cairo University graduate who holds a managerial position at a Japanese public organization, sayid that obtaining a Cairo University diploma through money or connections is entirely plausible.

In the phrase "an Egyptian man, ..., said that...", the two commas exist as a pair, because what goes between them is a sort of interjection.

And a fraudulent diploma will be issued.’ There is yet another motive as well: for Cairo University, if this scandal were to become public, they would lose face both at home and abroad, so at this point they cannot deny that Ms. Koike graduated.

I might consider merging "[a]nd a fraudulent diploma will be issued" with the previous sentence.

Although she claimed to have graduated summa cum laude from Cairo University and even released her diploma, multiple flaws in the document have been pointed out.

It is said that Japanese media were reluctant to pursue the matter, fearing a loss of advertising revenue.

Reportedly, an Egyptian man, a Cairo University graduate who holds a managerial position at a Japanese public organization sayid that obtaining a Cairo University diploma through money or connections is entirely plausible.

A woman working as a researcher in the Cairo bureau of a Japanese newspaper explains, ‘Iif a politician orders, “Make it look as if this person graduated,” then of course she’ll be recorded as having graduated.

And a fraudulent diploma will be issued.’ There is yet another motive as well: for Cairo University, if this scandal were to become public, they would lose face both at home and abroad, so at this point they cannot deny that Ms. Koike graduated.