A limited-time collaboration between Calpis and San-X Universe kicked off on April 20. The collaboration brings together the beloved Calpis brand and the popular world of San-X characters for a special campaign.
The collaboration video features fan-favorite San-X characters — including Rilakkuma and Sumikko Gurashi — working together to make Calpis while thinking of their loved ones. The video captures the warm, nostalgic feeling that the Calpis brand is known for.

Starting May 18, a campaign offering a chance to win a Calpis Drinking Kit will be held. A total of 1,000 kits will be given away by lottery. Each kit features designs of the cute San-X characters and includes a glass pair set, a silicone tray, a stirrer, and a mini pitcher.
Campaign Details
Name: Calpis Drinking Kit Present Campaign
Campaign Period: May 18, 10:00 AM to September 18, 11:59 PM
Eligible Product: Calpis (concentrated type) 470ml, all varieties
How to Enter:
- Purchase an eligible product and complete the initial survey
- Upload a receipt or proof-of-purchase image to the campaign site
- Accumulate entry points and complete your entry (3 points = 1 entry)
Prize: Calpis Drinking Kit (glass pair set, silicone tray, stirrer, mini pitcher) — 1,000 winners
For more details, visit the official collaboration site at https://www.calpis.info/san-x/. The campaign entry page (https://receipt-line.com/calpiskit_cp/) will go live from May 18 at 10:00 AM.