Businessman Takafumi Horie updated his X on the 22nd, reporting that he had received his sixth dose of Covid-19 vaccine.

"Sixth dose of the new coronavirus vaccine!" he wrote in the post, along with a photo of part of a Pfizer document. In response to concerns about side effects, he replied, "I've never had any before, and I don't think I'll have any this time either," and in response to concerns about mutant strains, he replied, "There's still no vaccine for KP.3, but the current version seems to have some preventive effect. I plan to get the new one again in three months."

It seems that various opinions have been received about Horie's X since then, with responses such as, "By nature, I'm pro-vaccine and against unnecessary masks. I wear masks where they're necessary, but I don't wear them in places where I think there's no point." (Original text), "It'd be a shame not to get vaccinated against diseases that have vaccines lol. There are still many viruses that don't have vaccines. There's a high chance of preventing them, and even if you do get infected, there's a high chance that the symptoms will be mild. Do you think everyone won't get infected? Or are you okay with them becoming seriously ill? lol," and "I think it's better to get the vaccine even if you don't have underlying conditions."

On the 23rd, in response to the opinion that "If someone died from a side effect of the vaccine, that would be a turning point," he bluntly dismissed it, saying, "There's no way someone would die, lol."