The 100 Girlfriends Who Really, Really, Really, Really, Really Love You - Vol. 9 Ch. 76 - Yaku-san's Girlfriend Concentration

[Krendall]

The plush that Meme used to disappear when she was groped, is an Earthbound/Mother 2 reference, it’s a Happy Happy Cultist ready to paint the town blue. You can tell based off the puffball hood and two pair of paint brushes.

Or it could be a Chao from Sonic with two popsicles.

Most likely the Chao. The Japanese cultist sprite doesn't have the poof ball.

Anyway, we need more of "smart" Naddy.