Nijisanji Announces Adorable Summer-Themed "Debirun" Merchandise Collection Featuring Debidebi Debiru and Runrun

The popular virtual YouTuber (VTuber) group Nijisanji has announced the release of "Summer Vacation with Debirun" (Debirun to Natsuyasumi), a new merchandise line featuring beloved characters Debidebi Debiru and Runrun. Sales are set to begin on the official Nijisanji Store on Tuesday, July 21, 2026, at 5:00 PM JST.

This summer-themed collection features a highly anticipated lineup, including mini-figures, sticker sets, study notebooks, and acrylic dioramas. The charming visuals—illustrated by artist Nishida—depict the adorable duo riding in a sidecar motorcycle, capturing a perfect summer vibe.

Following the surprise announcement, fans took to social media to express their excitement, with comments like, "The Debirun summer goods are so cute I'm going crazy!" and "I'm so happy we get to spend another summer vacation together!" At the same time, some fans voiced playful despair over the campaign's bonus system, which rewards customers with one random bonus item for every four mini-figures purchased. "It makes completing the set so difficult, but I still want them all so badly!" remarked one fan, showcasing their deep devotion to the characters.

With their adorable designs capturing the hearts of fans, the "Debirun" summer collection is shaping up to be one of this season's most highly anticipated releases.

The Context: Who are Debidebi Debiru and Runrun?

Nijisanji, managed by AnyColor Inc., is one of the largest and most influential VTuber agencies in Japan and globally. Among its diverse roster of virtual talent, Debidebi Debiru is a highly popular, mischievous koala-like demon who debuted in 2018, known for a unique voice and engaging personality. Runrun is a more recent addition, a cute mascot-like creature VTuber who debuted in mid-2024. Together, fans affectionately refer to the duo as "Debirun." Merchandise drops like these are major events in the VTuber community, often selling out quickly due to the passionate fanbase and limited-edition items.