Everyone forgets that Mumei is the one taking the lead in her relationship with Kronii (Also Fauna is angling for a threesome now, but this image predates that)
Pekora and Miko have a strong rivalry and are competitive. The pocky game ends when either of the contestants breaks the pocky, but if neither chickens out it will inevitably end in a kiss.
To Pekora the kiss is a foregone conclusion and she doesn't want her first kiss to taste like chocolate.