This episode is a special episode dubbed as "Japan's Big Problem! Nationwide Research Special". The first segment is the local problem investigation. The problems included a weird cutout stand-in panel in Niigata, a supermarket in Shizuoka with a flexible slogan, Fukui youths who are too good in English, and a stress-relieving small shrine in Gunma. Next is a special song performance from Ms. Kimura who sounded like Doraemon (Ep. 449) followed by Magician GO's magic performance (Ep. 397). After that was hearing the pride of people's hometown such as world's biggest tanuki statue in Komatsushima City and black pigs of Minamisatsuma City. The staff then visited Mr. Kiritani who showed his special technique to make his old printer print, his visit to a anti-aging clinic, and using his stock benefit vouchers. Lastly it was a video of Fef Girl (Ep. 207) kickboxing journey. This time both Fef Girl and Ota-san's family member came to support her. To end the episode, it was a special performance by TRF impersonators (Ep. 315) and street musician Kido-san (Ep. 313). (Source: Griffin Seannery at MyDramaList)