Okay, I only read Rae sporadically, and could not list many characters for you. But this still leaves a whole lot that cannot be explained without spending a few years in immersion learning of anime. What the after-all is going on, anybody!
In case it you think it would help to consult other recent Sunday “Echidna-Lad!!” episodes, here are a couple:
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Downpuppy writes:
No idea what it’s about.
Why are the wells slightly different colors? What is the significance?? And look who what is where???
And then look what came along a couple of days later!
Suggested by a reader who noticed something immediately after pressing Send on our handy-dandy Suggest-A-Cidu form, and thereupon wanted to retract! But we didn’t think that spelling solves all the mystery in this panel! What is that pet, how did it happen, are there more like it ..?
Comics I Don't Understand 