Do You Remember the Day You First Got Drunk? You Tried to Light a Campfire in Your Own Home, Didn't You?

Cocoa and friends are shopping for mugs when they meet Sharo, an underclassman at Rize's school who's also a childhood friend of Chiya's. Later, Chiya is worried that Sharo is working in some shady establishment, so she and the other girls decide to infiltrate Sharo's workplace.