Later, the student and their parents apologized to Sushiro, but the company, sayingid it would “take strict measures,” effectively rejected the apology. Later, the student and their parents apologized to Sushiro, but the company said it would “take strict measures,” effectively rejected the apology.

Videos of malicious pranks at establishments like restaurants and other eateries have been spreading on X. Videos of malicious pranks at establishments like restaurants and other eateries have been spreading on X.

A prominent case that went viral in Japan several years ago involveding a high school student (at the time) at a nationwide conveyor belt sushi chain, Sushiro. A prominent case that went viral in Japan several years ago involving a high school student at a nationwide conveyor belt sushi chain, Sushiro.

You can safely delete the phrase "(at the time)."

He licked some tea cups and soy sauce dispensers, among other things, and then uploaded a video of his actions to social media. He licked some tea cups and soy sauce dispensers, among other things, and then uploaded a video of his actions to social media.

When influencers on X blew it up, the store, the student’s name, and even theirhis high school were identified in no time. When influencers on X blew it up, the store, the student’s name, and even his high school were identified in no time.

You used "he" in the previous sentence. For consistency, you might consider using "his" here as well; the same applies to all further instances of "they" or "their".

MY GUESS: When influencers on X blew it ucovered that clip, the store, the student’s name, and even their high school were identified in no time. MY GUESS: When influencers on X covered that clip, the store, the student’s name, and even their high school were identified in no time.

NOTE: The phrase "blew it" is confusing. Perhaps you mean "covered that clip."

The clip was amplified very quickly, and he was doxxed. The clip was amplified very quickly, and he was doxxed.

A comma is needed because both clauses are independent clauses.

The clip was amplified very quickly and he was doxxedOPTION A: The clip quickly went viral and he was doxxed. OPTION B: The clip spread quickly and his identity was made public. OPTION A: The clip quickly went viral and he was doxxed. OPTION B: The clip spread quickly and his identity was made public.

The very next day, Sushiro’s customer numbers plunged, and, though the exact link wasn’t clear, the company’s share price also collapsed, inflicting huge social and economic damage. The very next day, Sushiro’s customer numbers plunged, and though the exact link wasn’t clear, the company’s share price also collapsed, inflicting huge social and economic damage.

Yet the posts about this incident were flooded with vitriolic comments such as “Don’t ever enter society again,” “Their parents are criminals, so they couldn’t possibly feel remorse,” and “Serves them right.” Tens of thousands of anonymous users ganged up online to savage a singleberate a minor who hadn’t even reached adulthood; what’s the difference between that and bullying or a collective lynching? Yet the posts about this incident were flooded with vitriolic comments such as “Don’t ever enter society again,” “Their parents are criminals, so they couldn’t possibly feel remorse,” and “Serves them right.” Tens of thousands of anonymous users ganged up online to berate a minor who hadn’t even reached adulthood; what’s the difference between that and bullying or a collective lynching?

Sounds a little more naturally

There’s no justification for the student’s behavior: they ought to compensate the store for its losses in good faith, and, above all, else to reflect deeply on their actions. There’s no justification for the student’s behavior: they ought to compensate the store for its losses in good faith, and above all else to reflect deeply on their actions.