Exciting Collaboration: MJ and Kaguya-sama's Love War Announce National Cup
SEGA has announced an exciting collaboration between the network battle mahjong game
MJ series and the beloved anime series
Kaguya-sama: Love Is War. The joint event titled
Kaguya-sama: Love Is War CUP will kick off on
June 23, 2025. Players can enjoy exciting mahjong gameplay while collecting exclusive in-game items inspired by Kaguya-sama.
Event Overview: Kaguya-sama: Love Is War CUP
This national tournament will be held simultaneously on both the mobile and arcade versions of the MJ game. Players will compete in two modes: the East Wind games and three-player matches, aiming to achieve the highest total score. Players who reach a set score in the preliminaries will advance to the finals, vying for the championship title during the final phase from
July 7 to July 13, 2025.
As players participate in the event through the MJ app, they will have opportunities to earn various collaboration items themed after Kaguya-sama, including unique winning buttons and table backgrounds.
Participating in MJ App
Preliminary Rounds A
- - Dates: June 23 (Mon) – June 29 (Sun) 2025
- - Registration: Open 24 hours starting from June 23 (7:00) until June 29 (29:59)
Preliminary Rounds B
- - Dates: June 30 (Mon) – July 6 (Sun) 2025
- - Registration: Open 24 hours starting from June 30 (7:00) until July 6 (29:59)
Finals
- - Dates: July 7 (Mon) – July 13 (Sun) 2025
- - Registration: Open 24 hours starting from July 7 (7:00) until July 13 (29:59)
Exclusive Collaboration Items
Players can collect various Kaguya-sama themed items throughout the event, including upgraded SP characters (UR) and special winning visual effects.
-
Upgraded SP Character (UR): Chika Fujiwara
-
SP Characters (3 types): Kaguya Shinomiya, Miyuki Shirogane, and Yu Ishigami.
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Table Backgrounds (5 variants): Unique backgrounds themed around the characters, including Kaguya with Shirogane and Chika!
-
EX Backgrounds (3 types): Exclusive backgrounds featuring Kaguya-sama in different designs!
-
Winning Button: A special button featuring Miko Iino.
Kaguya-sama Gacha
From June 23 to July 13, 2025, players can access a special gacha featuring 50 collaboration items. This includes:
- - Upgraded SP Characters (5 types): Kaguya Shinomiya, Miyuki Shirogane, Yu Ishigami, Miko Iino, and Aisaku Hayasaka.
- - SP Characters (8 types): Including mini versions of Chika Fujiwara.
- - Table Backgrounds (26 types) and various effects, enhancing the gameplay experience.
Arcade Version: MJAC
The arcade version will mirror the mobile app's events, maintaining the same timeline and featuring exclusive collaboration items. Players can earn voice-enabled SP characters, unique backgrounds, and special effects through in-game challenges.
Special X Campaign
To celebrate the Kaguya-sama CUP, a special
X campaign will run from June 23 to July 7, inviting players to follow and repost on the official MJ account for a chance to win signed voice actor merchandise.
About Kaguya-sama: Love Is War
Based on the acclaimed manga by Aka Akasaka, Kaguya-sama: Love Is War depicts a battle of wits and emotions among elite students in a prestigious academy, spawning an anime series with immense popularity and successive installments, leading to global sales surpassing
24 million copies.
About SEGA NET Mahjong 'MJ'
Offering immersive gameplay with realistic tile movements, the MJ series stands out as one of the top arcade mahjong experiences, now available on both mobile and PC platforms, expanding accessibility for fans worldwide.
For more details on the MJ app, visit the official site:
SEGA MJ Portal. Join the action, compete for pride, and enjoy Kaguya-sama's thrilling mahjong showdown!