1x05 - The Nice Bird SAGA in Your Heart

To raise their profile, the girls perform in a commercial for the fried chicken restaurant Drive-In Tori in Imari, which is edited with footage of Tae attempting to devour the company's mascot. Later, the girls participate in the Kashima Gatalympics while wearing promotional Franchouchou T-shirts as a publicity stunt. When the girls get covered in mud in the first round, they are forced to keep themselves dirty to avoid washing their human makeup off, which ruins their self-advertisement. After Tae wins first prize, Sakura remembers giving her a spare shirt and tells her to remove her muddy clothes, only to discover that the clean shirt underneath is actually for Drive-In Tori. Meanwhile, a journalist in attendance named Shinta Okoba recognizes #4's resemblance to Junko Konno after viewing the Drive-In Tori commercial and decides to investigate her.