A collaboration between Sengoku † Koihime Online Okuen Shinshi and Ayakashi Rumble!, both available on DMM GAMES, has been announced. A special campaign and collaboration event are currently running.
Ayakashi Rumble! is a Japanese fantasy-style intercept battle RPG from DMM GAMES and Techcross, featuring ayakashi (supernatural beings) and a simple yet deep skill battle system.
- Official Site: https://ad.games.dmm.com/oenshinshi_official/index.html
- Official X: https://x.com/senkoi_ol
Collaboration Commemoration Campaign
Period: February 27, 2026 (after maintenance) to March 10, 2026 (before maintenance starts)
The following special campaigns are running to celebrate the collaboration:
- Up to 110 free daily 10-pull gacha – Available free of charge every day during the campaign period.
- Limited-time collaboration missions – Completing missions also grants rewards in Ayakashi Rumble!. (Note: Reward distribution in Ayakashi Rumble! is scheduled for a later date. DMM ID account linkage is required to receive rewards.)
- Collaboration limited pack on sale – A special "Collaboration Commemorative Pack" with bonus items is available for purchase.
- Collaboration login bonus – Log in each day during the event period to collect daily login bonus rewards.
Collaboration Event: "Ayakashi † Koihime † Rumble!"
Period: February 27, 2026 (after maintenance) to March 10, 2026 (before maintenance starts)
A special collaboration event titled Ayakashi † Koihime † Rumble! is now underway. This event offers a chance to obtain the limited event general "★5 Nagi."
Story Synopsis:
While fighting demons, Zakuro encounters four girls who have arrived from another world. As they pursue mysterious creatures known as Magatsubi, an unexpected visitor appears...
"It's a Magatsubi!" "It's a demon!" "Stop copying me!"
Collaboration Exclusive Pickup: ★6 Asuka and ★6 Izuna
Period: February 27, 2026 (after maintenance) to March 10, 2026 (before maintenance starts)
Collaboration-exclusive characters ★6 Asuka and ★6 Izuna are available in the pickup gacha. The standard gacha offers a free first 10-pull, and the premium limited gacha offers a half-price first 10-pull.
Starting March 3, 2026, the second half of the gacha begins, featuring an additional character from Ayakashi Rumble!. More details to follow.
X Giveaway Campaign
An official giveaway campaign is being held on the official X account (@senkoi_ol). One winner will receive a "Gacha Ticket" usable in the collaboration event, and all participants will receive a "Koihime Gacha Ticket II."
How to Enter:
- Follow the Sengoku † Koihime Online
Okuen Shinshiofficial X account (@senkoi_ol) - Repost the designated post
- Link the campaign URL with your X account to immediately see your entry result
Entry Period: February 27, 2026, 5:00 PM to March 1, 2026, 11:59 PM
Play Sengoku † Koihime Online Okuen Shinshi here: https://games.dmm.com/detail/oenshinshi
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