Yodogawa Choutarou is one of the seven members of Friday Fellows known as Hotei. He is a professor at Kyoto University. Yodogawa is a passionate eater. He has traveled all over the world eating everything he could, be it a bug, plant, beast or fish.

After the incident that happened at Sensuiro he left the Friday Fellows group and started a protest group against eating tanuki, called the Thursday Club, much to annoyance of the Friday Fellows.