It's them!
They do it!

I updated Asako's design, so I went to sketch it out in colour and, uh, this happened
God I love them

So quick notes!
Their hairpin is an alternate sulphur symbol, the pin on the breast pocket is the lead symbol, and the pin on their right pocket is mercury. They have a pendant of the tin symbol under their labcoat, too! (Kaguya has a matching one, it's romantic or something)

#oakOCs #asako #tdth