Heh, Yukari being 17 y.o.

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If only Ran were there to help her

So, the boundaries of maths and tears cannot be undone.

Also Ran and her shiki status made her, somehow, a calculator. Not a pocket one but a calculator in the end

The score goes like this...
Sumi-chan: 1
Yukarin: 0

There’s a difference in being a Sage, and being a genius... and trust me, you need a lot of brain to be a genius sage... or a hermit genius?