Katsuhira Agata is a quiet and reserved teenage boy whose sense of pain has all but vanished. His friend, Chidori Takashiro, can only faintly remember the days before Katsuhira had undergone this profound change. Now, his muffled and complacent demeanor make Katsuhira a constant target for bullies, who exploit him for egregious sums of money. But their fists only just manage to make him blink, as even emotions are far from his grasp. However, one day Katsuhira, Chidori, and four other teenagers are abducted and forced to join the Kizuna System as official Kiznaivers. Those taking part are connected through pain: if one member is injured, the others will feel an equal amount of agony. These individuals must become the lab rats and scapegoats of an incomplete system designed with world peace in mind. With their fates literally intertwined, the Kiznaivers must expose their true selves to each other, or risk failing much more than just the Kizuna System.

Sixth grader Sana Kurata has a perfect life. Her mother is a (fairly) successful author, she has a young man employed to keep her happy and safe, and best of all, she is the star of the children's television show Kodomo no Omocha. There's just one thing bothering her, and that's Akito Hayama. Akito is a classmate of Sana's, and ever since he's started acting out in class, the rest of the boys have followed his example. Every day, the girls and the teacher wage a battle to keep the class under control and to get some actual learning done. That rotten Akito… Sana won't stand for this! The hyperactive Sana decides to dig deeper and find out what makes Akito tick, so class can go back to normal and the teacher can stop spending every day crying instead of teaching. But the more she learns about him, the more she realizes that there might be more to Akito than meets the eye.

Bundled with the limited edition of the 8th manga volume.

People fall in love in the most mysterious of ways. This statement seems to be especially true for the affluent genius playboy Ryou Amakusa. When he nearly falls off the stairs one rainy morning, a girl named Ichika Arima saves him. As if by fate, Ryou encounters Ichika again later that night; she happens to be the best friend of his little sister, Rio. Wanting to thank her, Ryou attempts to woo Ichika by employing his usual flirtatious tactics only to be immediately shot down, his target creeped out by his behavior. Rather than being discouraged, Ryou instead becomes more enthralled by her, and he begins to do everything he can to steal Ichika's heart despite receiving disgusted reactions each time. However, as time passes by, will Ichika remain repulsed by Ryou's creepy yet dedicated advances?