South Korea has been at 0.8% the last two days, and will continue to climb as their open cases resolve one way or another. Plus, didn't they just have a spike in Seoul?
There was a spike in Seoul. Based on their reaction so far, I have a great deal of confidence in their ability to isolate it and react effectively.
Regarding the rise in CFR: it will naturally go up as cases decline, because fatalities stem from a time when the case rate was more rapidly increasing. Korea’s case rate had been declining for several days: