Talk:Demon Slayer Mark

It is physically impossible for anyone over the age of 20 to reach a 200 bpm heart rate, so several Hashira should not be capable of obtaining the Demon Slayer Mark. WTF, Koyoharu Gotoge. (Not that he doesn't already use major artistic license with biology, but this really breaks suspension of disbelief.) 102.2 Fahrenheit is the lower limit of a high-grade fever, so this is not actually that life-threatening if it occurs for a short period.