This is a special episode titled "Japan's Big Problems Spring Investigation". The first problem was local problem in Eastern Japan. It included how Aomori citizens can identify apple varities, the anger of Akita citizens since many maps left out Oga Peninsula, and how Sendai citizens thought that they are fifth biggest city in Japan instead of Sapporo. They also investigated water from Shizuoka which was claimed delicious and bad rap songs from wannabe rappers. After that they switched to problems in Western Japan. It investigated some place names which were confusing or often mistaken, interesting road signs in Kumamoto, and how people from Hiroshima will be offended if one said that okonomiyaki is not from the prefecture. After that they did a documentary on Mr. Kiritani again. His sister asked him to clean the room and now the staff recording his cleaning activity as well as his daily activity using his stockholder benefits. They later investigated Kansai Dialect, showing various varieties in the area and questioned Murakami's Kansai dialect. After that they welcomed the Wakayama lady who can't pronounce "za-zi-zu-ze-zo" (Ep. 101) to enjoy delicious dishes from Tokyo. But the staff purposely selected dishes with names that contains the syllables she can't pronounce. (Source: MyDramaList)