Hakurou

That Time I Got Reincarnated as a Slime: Hakurou's 300x Beheading

A clip of Hakurou — the white-haired swordmaster of Tempest in That Time I Got Reincarnated as a Slime — calmly decapitating a trio of arrogant enemies blew up on a Japanese reaction channel (1.4M views), and the comment section turned into a masterclass on why "seeing fast" is not the same as "moving fast." The enemies carry a skill that lets them perceive the world at 300x speed and assume that makes them untouchable; the top Japanese comments patiently explain the trap — your eyes can run at 300x, but your body can't, so you watch your own decapitation arrive in slow motion and still can't dodge it. From there the thread becomes equal parts swordsmanship analysis (the "Oboro-ryu Water Slash" reads as a real water-style sword art) and pure schadenfreude at three smug characters getting humbled, before pivoting into a running gag — if Hakurou's strikes are that fast, then logically his villain monologue must also be playing back at 300x speed. It all lands on the one iron law of anime that these three forgot to obey.