In her art class, Maruko decides to draw a depiction of a happy song she'd recently learned — but she later discovers the song has a much darker meaning. Tarako, Yuko Mizutani, Yusaku Yara, Mie Suzuki, Kei Tomiyama, Yuko Sasaki, Yumiko Takahashi, Yasunori Matsumoto Added on Netflix 2023-04-01.