The story of Shinemon that spans two generations...... is supposed to have ended, but both Shinemon and Shin appears!? Shinemon and Shin reminisce about their individual pasts.

The first semester has come to a close, and the Ikeda lab is having a party where everyone's bringing what they like to eat and drink. They're having fun, playing games like the "prime number Yamanote line game," when a drunken Himruo finally does a certain something with Yukimura... And even Kanade ends up drunk... On the other hand, the mood quantifier obtained through the previous round-robin kiss experiment has progressed their research tremendously, and in order to gather more data, Yukimura and the others use fairy tales such as "Snow White," "Kaguya-hime," and "The Crane Returns a Favor" as references, but...

Djeeta and the crew head to an ancient castle after hearing rumors about the Wish Egg, a fairy tale treasure said to grant any wish.

Mikoto and Shokuho continue pursuing Gensei Kihara using their own individual methods. Kuroko attempts to identify the girl who abducted Uiharu and Misuzu. Saten decides to investigate an abandoned factory that may be connected to the case.

Isamu and Zo Zo Zombie join up with a losing backlot dodgeball team only to discover they’re playing against an entire team of snot zombies cloned from Snot Zombie himself. Dark Zombie’s bid to open the Realm of Ultimate Darkness is stalled unless he can find someone to sacrifice. Zo Zo Zombie must fend off the evil one’s demonic attacks and deliver Isamu’s cold medicine! Zo Zo Zombie gets the bright idea to walk Mochi in the park off leash, but is soon spotted by Big Cop, leaving Zo Zo and Mochi chased clear into earth’s orbit. Zo Zo Zombie orders a zombie robot vacuum cleaner to prepare to host a fancy house party, but there’s a problem: It won’t stop vacuuming! It turns out to be an undead creature with an insatiable appetite and Zo Zo must find a way to ease its hunger before it sucks up everything in the house.

After finishing their desert crossing, Golem and Somali head to the witches' village. After learning of a book about humans called "The Story of Haraiso" in the witches' library, they work with the librarian, Hazel, to find the book.

To thank the group for all their hard work in the past, Shirase invites the party to enjoy the sunny beach. While enjoying the wonderful weather and pristine waters, and accident causes Masato to lose all his memories, including those of Mamako!

Golem goes berserk against the hunters, and even attacks Yabashira in his fury. Somali, believing in the bond they share, attempts to stop him.

The half of the mercenary army that had been blocking the road during the White Whale subjugation returns to join the main force. Subaru then leads the way into the forest of the Mathers domain, hoping to find and destroy the Witch's Cult before they can learn of the subjugating army's movements. Subaru and his companions head toward Roswaal's mansion to evacuate Emilia and all the others there, stopping at the nearby village on the way and beginning to evacuate its residents as well. However, the situation takes a turn that nobody expected...

Crunchyroll goes to MADHOUSE to meet the team behind Chihayafuru season 3. We go behind the scenes of this season OP and talk about what it's like to be back to the show after 6 years