There's a wordplay here that's lost in translation, with how 調教/choukyou is used.
Generally this word refers to training of animals, but it could mean sexually "training" someone (usually in context of hentai), or used as a slang for "tuning" in voice synthesizers such as Vocaloids. So, in this case, it might be a play between the last two meanings.
That's the Nejima Kitsune (Wind-Up Fox), a mascot designed by Fubuki well before Cecilia's debut. The tag has been added, along with others. (Fubuki has several mascot characters.)
Ah, I had figured they were all the same species of mascot and saw the sukonbu match the closest to the one on the top right. Thanks!
Reference to a bit from Family Guy where Peter backs out of the dining room to get away from a story Lois is telling, continuing to back up until he ends up in the previous show Bob's Burgers.
The connection in this case is that all three are yandere girlfriends from dating simulators.
Specifically, yandere AIs from dating simulators that act as your girlfriend.
