Kaiju No. 8 THE GAME Adds Numbers Weapon 4 Kikoru in Valkyrie Event

The new unit is titled [The Valkyrie’s Successor] Kikoru Shinomiya.¹ According to the announcement, she inherits Numbers Weapon 4, the weapon previously used by her mother, Hikari Shinomiya.¹ Her optimal weapon type is Ax, and the update also introduces the new five-star Ax-Freyja weapon.¹ In other words, this is not merely a costume change: Kikoru arrives as a new five-star combat option built around her mother’s equipment.¹

“Valkyrie of Aspiration” is a story-focused Special Event centred on Kikoru.¹ Players can earn more than 1,500 Dimensional Crystals through event missions, quest rewards and item exchanges, as well as an in-game Home background and further rewards.¹ The official promotional art pitches the event as already live, while the US App Store’s official in-app-event listing gives the precise run: August 20 at 03:00 UTC through September 10 at 03:00 UTC.² That is the useful bit of fine print often buried beneath the shiny character art: the event is limited-time, so procrastinating is a remarkably poor battle strategy.

The game’s title is officially styled KAIJU NO. 8 THE GAME.² Apple lists Akatsuki Games Inc. as both developer and seller, while the copyright line identifies the wider production partnership with TOHO Co., Ltd. and Production I.G.² The game is available on iOS, Android and PC, according to Anime Corner’s report.¹ For territory, the verified storefront evidence is the United States App Store listing, and the official English YouTube channel has also published the Kikoru pickup trailer.²³ Neither of those sources establishes a separate regional lock, so this story confirms the US listing rather than making an unsupported “worldwide” claim.

Our opinion

This is a smarter live-service addition than an interchangeable rarity upgrade. Giving Kikoru Numbers Weapon 4 ties the new five-star unit to Hikari Shinomiya, while the story event and more than 1,500 Dimensional Crystals offer players a reason to log in beyond chasing another banner. The catch is the short event window: the US listing places it from 20 August to 10 September 2026. Existing players should check it before it disappears; everyone else can watch the trailer without opening the gacha machine. The event is substantial, but it is not a reason to spend blindly.