Roa, a popular live streamer who views Isshin's bottled tea, Chako, as a rival, lost control, and Hananoki-en faced backlash! On top of that, they now have to compete with Roa, who is also a tea maker, in a national competition. They began intensive training for the must-win battle because if they lose, they will be exposed as a fake couple! However, the Sayama tea team-Isshin, Jin, and Yabuki-is out of order. Can Chako handle the situation as a good “wife” in this fake married couple's crisis?! Despite being under fire, Chako and Isshin are attending a Japanese tea festival in Fukuoka. How exciting that they are spending the night, just the two of them, for the first time! What awaits them in Fukuoka?!