Chu-Bra Season 1 Episode 3 This Swelling Chest/A Windy Day

Having resolved their misunderstanding, Yako and Haruka become friends with Nayu. However, the two are still uncertain about their underwear conscious friend. When Nayu points out Yako's cup bra doesn't fit her body type, Yako takes it personally. Yako puts herself in an embarrassing situation when the bra she secretly wore slips while vaulting in PE class. After hearing Yako swear off bras forever, Nayu tries to find something to help her. Having healed Yako's stubborn heart with a hand-made bra, Nayu decides to join the Crafts Club to make more creations. However, the Crafts Club refuses to put underwear on display at the Culture Festival and turns her down. Yako encourages the dejected Nayu to form an Underwear Club. Nayu immediately sets out to form the club, but the teachers' reactions are less than favorable. Hiroki Komachi from Class E decides to help Nayu despite his bitter past.