App Game "Arknights" and Rilakkuma Collaborate! "Arknights x Rilakkuma" Collaboration Campaign Starts Today

San-X Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo) announces that a collaboration campaign between the app game "Arknights - Tomorrow's Ark -" (hereinafter referred to as Arknights), operated by Yostar, Inc. (Headquarters: Chiyoda-ku, Tokyo), and "Rilakkuma" will be held starting July 6 (Mon), 2026.

During the campaign period, in addition to a login campaign where collaboration furniture can be obtained, packs containing new collaboration outfits and profile icons/themes will also be sold.

~ "Arknights x Rilakkuma" Collaboration Campaign Event PV ~

https://youtu.be/soCWs2kxH1Y

・Click here for the official website of "Arknights - Tomorrow's Ark -"

https://www.arknights.jp/

● Collaboration Campaign "Laid-back Mood" Held!

Log in during the campaign period to receive the following rewards.

▼ Reward Details

・Available for pickup after 16:00 on July 6, 2026 (Mon)

Furniture "Relaxing Sofa", Furniture Parts x 500, Intermediate Operation Records x 20

・Available for pickup after 16:00 on July 7, 2026 (Tue)

Furniture "Fluffy Gathering", LMD x 50,000, Advanced Operation Records x 30

▼ Campaign Period

July 6, 2026 (Mon) 16:00 - July 27, 2026 (Mon) 3:59

● "Arknights x Rilakkuma" Collaboration Outfits Available!

The following "Arknights x Rilakkuma" collaboration outfits will be available in the fashion shop.

▼ Sales Details

・Rosa Exclusive Outfit "Always By Your Side"

Rosa exclusive, collaboration outfit "Always By Your Side".

Let's cast aside stuffy manners and constraints and lie down.

Fluffy friends will always welcome you.

"Phew, I think I'll rest like this for a bit. Just a little bit."

・Ifrit Exclusive Outfit "Take It Easy on Your Travels"

Ifrit exclusive, collaboration outfit "Take It Easy on Your Travels".

Once you've marked the monsters, fortresses, and treasure locations on the map, let's set off with your favorite stuffed toy, a warm drink, and excitement.

"The difficulty is only set to 'Relax'? I can handle even the highest difficulty!"

▼ Sales Period

July 6, 2026 (Mon) 16:00 - July 27, 2026 (Mon) 3:59

※ Rosa exclusive outfit "Always By Your Side" and Ifrit exclusive outfit "Take It Easy on Your Travels" are not eligible for outfit exchange tickets.

※ They may reappear after the sales period ends. The method of obtaining them may differ upon their reappearance.

● Collaboration Items Available in the Pack Shop!

During the "Arknights x Rilakkuma" collaboration campaign period, the following collaboration items will be available in the store.

▼ Sales Details

・Rilakkuma Collaboration Pack

Profile Icon "'Rilakkuma Friend' Plushie" x 1

Profile Icon "'Korilakkuma Sweet' Plushie" x 1

Profile Icon "'Rilakkuma Leader' Plushie" x 1

Profile Icon "'Korilakkuma Model Student' Plushie" x 1

Profile Icon "'Rilakkuma Honey' Plushie" x 1

・Fluffy and Warm Pack

Profile Theme "Warm Mood" x 1

Originium Dust x 1,600

▼ Sales Period

July 6, 2026 (Mon) 16:00 - July 27, 2026 (Mon) 3:59

※ Each item can only be purchased once.

Please enjoy this collaboration.

About "Arknights - Tomorrow's Ark -"

"Originium".

It brings immense energy, but it is also the source of terrible natural disasters and the incurable disease "Oripathy".

Awakening as a commander with no memories, you will be reunited with comrades who knew your past self.

On a mysterious land where blessings and calamities swirl,

This is a full-fledged tower defense game depicting the battle for tomorrow by those with special abilities.

"Arknights - Tomorrow's Ark -" Promotional Movie

https://youtu.be/HdrfvsrB600

【Overview】

Title: Arknights - Tomorrow's Ark -

Genre: Tower Defense

Platforms: iOS / Android

Release Date: January 16, 2020

Pricing: Free-to-play (in-app purchases)

Official Website: https://www.arknights.jp/

Official X: https://x.com/ArknightsStaff

About Rilakkuma

A bear in a costume. Continues to be cared for by OL Kaoru's family along with Korilakkuma and Kiiroitori. It is unknown who is inside. Rilakkuma's main interests are his daily meals and snacks. Favorite foods include hotcakes, omurice, pudding, and dango. Chairoikoguma is a friend who lives in the honey forest.

▽ Learn more

https://www.san-x.co.jp/ja/characters/rilakkuma/

▽ Rilakkuma Official X https://x.com/rilakkuma_gyr

2026 marks Chairoikoguma's 10th anniversary! Please also visit the anniversary site☆

In 2026, Chairoikoguma celebrated its 10th anniversary! The Chairoikoguma 10th Anniversary site has opened♪

The Chairoikoguma 10th Anniversary site is a special site packed with 10th-anniversary information, including the fortune-telling "Today's Chairoikoguma" that can be challenged once a day, a history looking back at Chairoikoguma's themes so far, and introductions to 4-panel manga with "#Koguma's Honey Forest Diary".

You can also get special 10th-anniversary wallpapers, so please take a look!

Click here for the Chairoikoguma 10th Anniversary site

https://www.san-x.co.jp/rilakkuma/chairoikoguma_10th_anniversary/

Click here for Chairoikoguma Official X

https://x.com/Chairoikoguma_5?s=20

About San-X (https://www.san-x.co.jp/company/)

San-X continues to create over 1,000 100% original characters such as Rilakkuma, Sumikko Gurashi, and Tarepanda, delivering their mysterious charm to the world through original products, licensing, various events and promotions, and videos. The characters are cute in appearance, but have a slightly absurd humor that makes you chuckle, and a gentleness that embraces and comforts your heart. San-X characters are not just cute and attract many people.

©2026 San-X Co., Ltd. All Rights Reserved.