Tập 4: Phát minh ngày mưa của Chiku-tan và một cuộc dạo chơi cùng Binchou-tan

4

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)