I think Sungho cut his wrist vertically. Vertical cut makes it incredibly harder to stiched up and heal compared to horizontal cut. However, I'm not sure whether he is dead or not.
P/S: In the end, i still haven't answered your questions =))))))))))
Where did you read the rams?
https://toonkor.ski/%EA%B0%90%EA%B8%88%EC%B0%BD%EA%B3%A0
It's better if you read it from the original website ( https://www.bomtoon.com/comic/ep_list/incarc_WH) as you can support the author by doing that.
gooosh. i bet we all already expexted him to suicide
In the latest raw, is he dead?