Netmarble has kicked off 2026 in explosive fashion with a major anime crossover for The Seven Deadly Sins: Grand Cross, teaming up with the hit TV anime FIRE FORCE. Available now and running until February 19, 2026, the collaboration introduces new playable heroes, themed events, and generous rewards as part of the ongoing 777 Relay Campaign Phase 2.
This limited-time crossover blends the fiery action of FIRE FORCE with the strategic RPG combat of Seven Deadly Sins: Grand Cross, offering fans a fresh reason to dive back into the popular mobile title.
FIRE FORCE Characters Join Seven Deadly Sins: Grand Cross
The Seven Deadly Sins x FIRE FORCE collaboration brings three iconic characters from the anime into the world of Britannia as SSR collaboration heroes:
- [Hero of Flames] Shinra Kusakabe
- [Red Flame Nekomata] Tamaki Kotatsu
- [Frozen Time] Shō Kusakabe
Leading the lineup is Shinra Kusakabe, the main protagonist of FIRE FORCE. Designed as a versatile combat unit, Shinra can reduce damage taken by allies and, under specific conditions, remove an enemy from battle. His flexible skill set makes him a powerful option for both PvE and PvP encounters.
How to Recruit FIRE FORCE Collaboration Heroes
Players can obtain the new crossover heroes through the 7DS x FIRE FORCE Pickup Draw. As part of the 777 Relay Event, additional rewards are tied to mileage milestones:
- FIRE FORCE Equipment Supply Boxes at 60, 180, and 450 mileage (one-time rewards)
- A guaranteed SSR hero at 300 mileage
- A selectable SSR FIRE FORCE hero at 600 mileage, allowing players to choose their preferred collaboration unit
These bonuses make the event especially rewarding for both new and returning players.
Limited-Time Events and Login Rewards
A wide range of FIRE FORCE-themed events accompanies the collaboration, offering valuable rewards throughout the event period:
Check-In Events I and II
- Earn up to 70 Diamonds over 14 days
- Receive up to 30 Pickup Draw Tickets through three-day login rewards
Special Missions and Event Content
- Complete missions to earn growth materials
- Unlock Tamaki Kotatsu’s costume as a final mission reward
- Participate in a Roulette Event featuring collaboration gift boxes and Tamaki’s weapon costume
Collaboration Event Boss Battle
Players can challenge Shō Kusakabe in a special Event Boss Battle. By clearing the Extreme difficulty 15 times, players can earn exclusive rewards and the limited collaboration title “Adolla’s Conduit.”
777 Relay Campaign Continues With New Year Rewards
In addition to the crossover content, the 777 Relay Campaign Phase 2 continues to deliver New Year rewards, including:
- Costume enhancement material coupons
- Special Merlin and Escanor costumes
- Additional in-game bonuses designed to support character growth
These campaign benefits further enhance the value of the collaboration update.
Seven Deadly Sins: Grand Cross Remains a Global Hit
With over 70 million downloads worldwide, The Seven Deadly Sins: Grand Cross continues to be one of Netmarble’s most successful mobile RPGs. The game brings the anime’s story to life with high-resolution 3D graphics, cinematic cutscenes, and voice acting from the original Japanese cast.
The game is available globally on iOS and Android, with regular updates that expand its story, roster, and gameplay systems.
For more information can be found on the game’s official website.
