Four different worlds are connected through the "Baumkuchen Seeds of Happiness." The World of the Kawanobe's - Three brothers, Taro (Mame Yamada), Jiro (Hiroshi Yamamoto), and Hiroto (Shoichi Honda) who is a so-called NEET (short for "Not in Employment, Education, or Training) make up the Kawanobe household. The World of a Bar - Two men (Mame Yamada and Hiroshi Yamamoto) sits in a bar and discusses the Kawanobe brothers' love story. The World of Yumi - Yumi is reading a novel about the characters in the bar. The World of a Novelist - Novelist Masatoshi (Shoichi Honda) is writing a novel about Yumi. In their own worlds, in their own way, each character will find a way to arrive at their happiness.

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