Rikuoh

Miyazawa, the CEO of a long-standing tabi sock company in decline, considers using his business's techniques to create new running shoes. (Source: Netflix)

Miyazawa wants to use the special Silk Ray material for the soles of the Rikuoh shoes, but getting the patent owner's permission proves difficult. (Source: Netflix)

After running in the Rikuohs, Mogi says they're comfortable but the soles are too soft. Iiyama gets to work adjusting the Silk Ray with Daichi's help. (Source: Netflix)

Determined to make the Rikuoh the best shoe in the world, Miyazawa persistently pursues Mogi. A Daiwa employee urges Mogi to retire due to his injury. (Source: Netflix)

With development costs mounting for the Rikuoh, Miyazawa decides to create a new tabi shoe using Silk Ray. Atlantis offers to sponsor Mogi again. (Source: Netflix)

The New Year Ekiden begins. The Kohazeya employees cheer on Mogi as he receives the sash in the sixth leg, with Daiwa Food having fallen far behind. (Source: Netflix)

Daichi volunteers to search for new upper material. Later, Kohazeya faces a financial crisis when an accident renders the Silk Ray machine unusable. (Source: Netflix)

Feeling offended, Miyazawa rejects Sakamoto's shocking proposal. Yasuda suggests the Kohazeya employees enter a relay race to promote the Rikuoh. (Source: Netflix)

Mogi decides to wear the new R-IIs to save Daiwa's track team. Meanwhile, Misono invites Miyazawa to go fishing to ease his fears about the sale. (Source: Netflix)

Kohazeya remains in dire financial straits with no way to make more Rikuohs. Eventually, Misono reaches out with another tempting yet risky offer. (Source: Netflix)