As Kaiju No. 8 chapter 123 approached, fans anticipated Kafka Hibino facing an uphill battle against the Meireki Era Mega Monster’s next transformation. With the chapter officially releasing on March 13, 2025, these expectations were met as Kafka struggled against Meireki’s original, fully realized form. The creature, which once terrorized Japan 400 years ago, returned stronger than ever, forcing Kafka into a desperate fight.
Despite his recent power-ups, Kafka found himself overwhelmed by Meireki’s immense strength, barely managing to hold his ground. As the battle raged on, it became evident that Kafka alone wouldn’t be able to turn the tide. In a stunning turn of events, the chapter’s final moments introduced unexpected reinforcements—Kikoru Shinomiya, arriving armed with not one, but two powerful Numbers Weapons.
Kikoru Shinomiya Breaks Limits in Kaiju No. 8

Kaiju No. 8 chapter 123 picked up with Kafka requesting an expansion of the danger zone, building on the previous chapter’s closing moments. Soshiro Hoshina questioned his reasoning, prompting Kafka to reveal that Meireki had returned in the same form it had assumed centuries ago. He identified the monster as the entity responsible for Tokyo’s destruction and the vast network of Kaiju lurking beneath Japan.
As Meireki’s true form emerged, its sheer presence left even top fighters like Hoshina, Gen Narumi, and Keiji Itami stunned. Upon recognizing Kafka, Meireki immediately launched an attack, with Mina Ashiro watching in shock. Narumi quickly deduced that the monster’s overwhelming presence was the reason for the unusual number of Kaiju signals. Meanwhile, Kafka dodged an attack that reduced a massive building to rubble, attempting a counterattack of his own.
Despite his best efforts, Kafka was unable to break through Meireki’s defenses, realizing that the monster had grown exponentially stronger over the centuries. He aimed to create an opening to locate its core, but Meireki retaliated with a devastating glyph attack. The force was enough to take Kafka’s head clean off, though he quickly regenerated. Shifting his strategy, he opted to dodge and wait for the perfect moment to strike.
As the battle continued, Meireki unleashed a powerful scream from the massive mouth on its back. While Kafka remained unaffected, nearly every human fighter in the vicinity was crippled by the sound. Akira Kurusu then confirmed the worst—new monster signals were appearing alarmingly. However, of various battlefields soon revealed the horrifying truth: Meireki was reviving defeated Kaiju across Tokyo and beyond.
With reanimated monsters flooding the battlefield, Mina, Hoshina, and Narumi were surrounded. Realizing that time was running out, Kafka resolved to finish the fight as quickly as possible. He charged toward Meireki, only to be met with a web of glyph-based defenses. The monster effortlessly blocked his approach, leaving Kafka frustrated and acknowledging that they were back to square one.

Hoshina pointed out that the only viable strategy left was to rely on Narumi’s Numbers Weapon 1. However, as Narumi fought off nearby Kaiju, he questioned whether he still had the strength to take on Meireki. In response, Narumi cryptically stated that he wasn’t referring to himself, just as an unknown figure fired projectile weapons at Meireki. This unexpected attack left everyone in shock.
As the dust settled, Narumi addressed the mysterious attacker, referring to them as his “dear simpleton of a student.” Moments later, Kikoru Shinomiya was revealed, standing tall in her Numbers Weapon 4 suit. Her closed eyes hinted at intense concentration before she opened them and confidently responded to Narumi. In a stunning revelation, she was seen wielding both Numbers Weapons 4 and 1 at once—the first character in the series to achieve such a feat.