Board Thread:Wiki Discussion/@comment-43313857-20190728194840

Many sources state that Sans' KR is a poison effect, however when looking closer, this isn't the case. Allow me to explain; when you fight Sans, you have 92 HP, so let's say you took 50 HP of damage, your HP (yellow) drops to 42, but the KR (mageta) slowly applies that damage over time, until your HP numbers display 42 / 92 HP. The gameplay function of KR is so that you don't go down to 36 HP instantly. And if KR truly is a poison effect, how come it doesn't drop you past 1 HP? In any fight with Sans, their KR will end with them having 1 HP.

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