Tazuna and Koyori meet their next opponent: Kodama, a powerful idol singer who has defeated many other Hand Shakers. She and her producer are their toughest opponent yet, and together, they overwhelm Single Gear. Tazuna barely escapes into the water below a nearby bridge...

It's time for the School Festival, and Tazuna's class is in big trouble! The machinery's broken and the cooks broke their arm, and they've got no way to get the cheap ingredients they need for their food stall. Can Tazuna use the connections he's made so far to make everything right? And can Koyori learn to cook in time?

Lily and Masaru insist on fighting Single Gear, despite Tazuna's fervent protests. The two of them use cards: Lily, her Tarots, and Masaru, his precious memories deck. But because Masaru is using the same strategy he does in the game, Koyori knows how to beat him. Can she share this with Tazuna when she isn't able to speak?

Koyori gets separated from Tazuna, and because she doesn't have a cellphone, she doesn't have a way to get in touch with him. Fortunately, she's found by President Lily and her little brother Masaru, who take her to play the new game, Precious Memories. Koyori shows an amazing talent for the game, but things take a sudden turn when Lily and Masaru are revealed to be Hand Shakers as well.

After the battle inside the Ziggurat, Chizuru and Hayate are horrified to find out that their victory would have cost Koyori her life. They agree to help Tazuna and Koyori, even though they're out of the fight now. They tell the two of them that in order not to be found in the real world, they need to come up with a name to use inside the Ziggurat when they fight. After a bit of thought, Tazuna and Koyori's new name becomes "Single Gear".

Tazuna meets Chizuru and Hayate, the pair who's car he fixed on the day he met Koyori. They're workers for a major food corporation in the area, and they offer to treat him and Koyori to dinner as a thank you. But after the meal, they reveal that they're actually Hand Shakers themselves!

Tazuna and his new friend Koyori have a problem: If Tazuna lets go of Koyori's hand, she'll die! Can he take her home with him and explain to his parents why he now has to live with a girl? And how's he going to take a bath with her!?

Tazuna and Koyori are facing off against Koyori's sister and the doc's old partner. Koyori's sister has been reduced to an emotionless mute after years of difficult treatments and abuse. Can the two of them bear to hurt someone so close to Koyori? And even if so, can they win against Handshakers who are so much more powerful and determined?

Makihara once had a partner, and a boss. Together they researched the Ziggurat, and the mystery of Babel's revelations. But when a pair of Hand Shaker children were born, their lives changed. The children were constantly targeted, and if they were defeated, they would die. Makihara and his partner tried their best to defend the children, but years of fighting wore them down, and they had a falling out. Now his partner is back, and he has a demand: put Koyori back to sleep forever, and separate her from Tazuna.

With the last of their foes vanquished, and Koyori now having the ability to talk, it's time for her and Tazuna to take up a part time job at the local Cocktail Corn. It's a time to reflect on what's gone on so far, meet old friends, and ready the pair for the future.

Tazuna is a young boy who loves to fix things. But his life takes an unexpected turn when he meets a girl who's lying on a hospital bed in an electronically locked lab. When he takes her hand, he finds out that he can never let go, or she will die. On top of that, he has to battle a man and his partner in something called the Ziggurat, and he doesn't have a power of his own. Can he unlock the might of the Hand Shakers?

Kurusu has tracked down the identity of the killer, and revealed her secret to Takuru. Now she goes to the school to meet with the one behind all the murders.

After Yui's death, Takuru's family tries its best to recover. Kurusu makes a shocking admission to Takuru that she's been hiding something from him ever since he met her. She's willing to do anything to find the killer, and she's getting very, very close...

Senri Minamisawa is dead. She became the fifth victim of the New Generation Madness, commiting suicide by impaling herself on a piece of rebar and then setting herself on fire in her own locked apartment. Takuru and his friends are relieved, but at the same time uncertain that it's really over. Just in case, they decide to stay together on the day of the next murder. Everyone hides out at Aoba Clinic, where it should be safe, but then Yui and Itou go missing...

It's October 23rd, the day of the New Generation Madness incident, and it's time for the next murder. Takuru and his friends are terrified that they're going to be a target, and so they stay up all night at Cafe LAX. But when Takuru opens the cafe menu once last time in the late hours of the evening, he finds a Sumo Sticker stuck to one of the pages...

Takuru and the others find a survivor in the basement of the hospital. Her name is Uki Yamazoe, and she's a young girl who looks to be around 10 years old. After seeing how Takuru was able to infiltrate the hospital, Kunosato realizes that he must be a "Gigalomaniac", a psychic with the power to make his delusions reality. But being a psychic doesn't come with just benefits, as one night he runs into someone who is trying to kill him...

After Kurusu is stabbed, Takuru infiltrates AH Tokyo General Hospital, hoping to find the creator of the sumo stickers. When he gets there, he, Onoe, and Itou are forced to hide in the basement to avoid being spotted. Inside the basement's autopsy room, they find a secret entrance that leads to an underground laboratory where terrible experiments were once conducted. Takuru thinks he's been here before...

After Kurusu is stabbed, the newspaper club is placed on hiatus. But Watabe, an important reporter with Niconiya News, wants to interview them about the things they've noticed with the sumo stickers and the hotel murder. Watabe's visit to the school, however, takes an unexpected and terrifying turn...

After Takuru is taken in by the police, Kurusu wants him to give up the case. But he's noticed something... the sumo stickers that have been placed all around town have something in common with the murder scenes. He puts up a hidden camera near a wall of sumo stickers that just appeared. But when Kurusu finds out, she leaves in the middle of the night to take it down...

The final battle takes place in the Hikariwo theater, where Takuru is trapped in a sightless and soundless prison in his own mind. He'll need Onoe's help to break free, but after what he knows about her, can he bring himself to ask for it?