Yacchie in 17: Master manipulator, truly insidious, most impactful stage 4 boss since at least Satori.
Yacchie in 19: so long gay bowser

C-light said:

Yacchie in 17: Master manipulator, truly insidious, most impactful stage 4 boss since at least Satori.
Yacchie in 19: so long gay bowser

Went from successfully coercing the main characters into doing her dirty work to being outsmarted by a literal statue. Absolutely comical, I love it.

In Yachie's storyline, Yuuma literally said she want to grab Yachie's big tail and swing it.

Ryoukai said:

Went from successfully coercing the main characters into doing her dirty work to being outsmarted by a literal statue. Absolutely comical, I love it.

To be fair Aunn is the most competent, capable person at the Hakurei Shrine. Yachie may have been outsmarted by a statue of a dog, but she was outsmarted by one that also outsmarted Reimu, Marisa, and Kasen combined while also running a successful corporate espionage op against Moriya.
There's no shame in being beaten by the one who actually managed to run the Hakurei Shrine at a sustainable profit.