4. Bölüm: Chiku-tan'ın Yağmurlu Gün Buluşu ve Binchou-tan ile Bir Yürüyüş

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It's raining and Chiku-tan invents a device for walking in the rain without getting wet, which she calls a chikuma. Unfortunately, it is actually a takeuma, which has already been invented. She goes for a walk and meets Binchou-tan. The two sit in an old car and play word games. The sun comes out and they visit a bamboo grove. Kunugi-tan admires a rainbow from her balcony. (Source: Wikipedia)