It makes you want a beer and a microbiology textbook at the same time. Sawaki's eyes still turn floating clouds of A. oryzae into round little chanting blobs, and Itsuki's fermentation cellar finally opens for business, which means soy sauce and sake get treated with the seriousness other shows reserve for sword fights. The saturated palette and the fact that every single face in Itsuki's lab is instantly distinguishable, Hasegawa in leather, Misato and Kawahama plotting their next cash grab, keeps a show about invisible organisms weirdly gorgeous to look at. Season two drifts off Sawaki and hands big chunks of screen time to Hasegawa and Kei instead, which is the honest knock against it, and yeah, it doesn't hit like the first run. It's still the only anime that will make you check the label on your miso. Slept on by everyone who never gave the first season a chance.
Sawaki Tadayasu returns to Professor Itsuki's lab, where his bizarre ability to see and speak with microbes finally has a practical purpose. The professor's fermentation facility is now operational, and Sawaki's ragtag circle of students is ready to put his gift to work: crafting soy sauce, sake, and other fermented staples while literally communicating with the microscopic organisms making it all happen. What begins as straightforward food production quickly spirals into chaos. The students discover that microbes have personalities, opinions, and attitudes about their jobs. Some are cooperative. Others are difficult. A few are outright mischievous. Sawaki finds himself mediating between his friends' ambitions and the stubborn bacteria and fungi that actually control whether fermentation succeeds or fails spectacularly. This season trades the school setting for hands-on experimentation, mixing comedy with genuine science education. The humor comes from watching overconfident students learn that microbes couldn't care less about human expectations. Expect absurd situations where fermentation goes hilariously wrong, character growth through failure, and the constant reminder that nature always has the final say.