What's with the Bag, Kamiyama-san? (Manga) Volume 3

After surviving the rainy season, the gang is excited for their first summer break together! Well, the girls are, at least. They propose the idea of organizing a club summer camp, and though Namito is hesitant, he changes his mind when Kamiyama-san offers her uncle’s seaside inn as a venue. That’s right—the Conversation Club is going to the beach! Namito excitedly explores the sunny shore alongside the girls, who all have very unique taste in swimwear. The beach is a blast, the inn is comfortable, and everything is going great...until a firework mishap leaves them feeling restless. Kamiyama-san pulls Namito aside for a heart-to-heart and reveals the origins of her bag-wearing, though when he finally learns the truth, guilt makes him want to distance himself from the club. But never fear! It’s Arai and Amano-san to the rescue! With a reasonable plan? Of course not!