Mastine said: Hard to believe Seren forgot about money for the 100 years it takes to become a youkai. Wonder how deep her couch is?
She's an antiquities dealer - they may have been rare or valuable collectible coins from a long time ago that she simply purchased or happened upon and didn't sell before they became youkai.
Assuming a 100-year warm-up before their 200/180-year-old birthdays, we can guess they were minted 300 and 280 years ago, respectively, meaning somewhere around the 1720s. Assuming they're European, (since the wizards don't seem terribly used to Japan yet,) that would be around the time of European Colonialism and the high age of Piracy. It's a little late to be from the plunder of the Native American empires directly, but the fall of Spain from its massive inflation from the influx of gold from the Americas as a European powerhouse was still in play, and being re-cast and re-minted.
It would be possible, and kind of funny, for them to be a doubloon and a piece of eight, respectively.
Otherwise, France was rather notably going through turmoil at those times, so she may have bought coins minted before the French Revolution that were no longer in regular circulation. I'm not as familiar with those, however.
When I first saw it I thought that it was a case of laziness during coloring, but now that I think about it... Ginka would not have known to color her own hair as silver if she was copying Kinka, so having her be blonde too makes sense in that third panel.
But then Ginka also seemed to regret the decision in the second panel as if it was a permanent decision. Does this mean that Ginka was able to change her form later, or is she stuck like that and actually has been dyeing her hair gray all this time?
Nee-san, do you know?If Tamaryu-dono was a coin-youkai too, she might have been named "Douka." Don't you agree? Mifi is suggesting a wordplay on the two's kanji.
Kinka:金香 (gold scent)
Ginka:銀香 (silver scent)
Douka:銅香 (bronze scent)
I'll throw in the others' kanji too.
Seren:雪恋 (snow romance)
Tamaryu:玉竜 (jewel dragon)
Shizuki:柴月 (brush moon)Everyone from my tribe was family. I go by my tribe's name, "Jegell."I remember a Japanese sherbet with the same name.Oyakata-sama gave us our last name too... Though, I don't know why.The Truth About to be RevealedI'm Douka-chan~♥ Pearl-ka....That's right.Then, why "two peas to a pod?" Seren-chan named us as sisters since we were both coin youkai.Or perhaps "Pearl-ka."It feels late talking about this now, but Kinka-dono and Ginka-dono aren't youkai-like at all.Y-you're gonna regret this...It's when the family registry system was enacted. When we had just started using our names...You know something? Puke it out, dumb sister!It was a summer day... Seren was eating an Ujikintoki sherbet while pondering about our names... Ujikintoki is a type of shaved ice. It is topped with green tea and sweetened bean paste, sweetened with sugar and milk.Sometimes I wonder if you're deceiving me.You two are coin youkai, but not related as real sisters, right?It's my life's biggest disgrace...Well, we've stayed in human form and haven't done youkai-like actions.This girl saw me turn into a human first, and copied me when she turned into a human.This is just perfect. You two are now sisters.*tsk*sipAhaha...Why!?Our godmother, Oyakata-sama claimed, "Your entity and names are alike, this is perfect."Tamaryu-chan is different because she's a dragon.Eek, that's really likely.We haven't heard Mifi's last name yet.I remembered after talking about naming parents.I don't have a last name.Speaking of last names, isn't your last name, Ujikintoki, pretty rare?Wait... Isn't that joke material? Joke material!? Neta (material) can also mean incriminating evidence, explaining a title that refer to detective shows.2P Color*Gerageragera* (laughing)Oh...Hmm...Look here, dammit!Tears!?Incredibly funny for Mifi.