I went to a doctor already, and it is fungal. I got some medicine for it so hopefully it'll clear up.

I use witch hazel and Spieck ASB after my shave. I think the balm has a little alcohol but I can barely feel it.

Well, in any case, the razor might not be the culprit at all. I just assumed the blade might be at fault considering the placement of the fungus and when it appeared (i.e, it came when I started straight razor shaving). I'll make sure to wipe my blade down with alcohol just in case though.