Tokyo Station to Host Limited-Time Sanrio × Piapro Pajama Pop-Up

A cozy crossover between two of Japan’s most beloved pop culture icons is arriving in Tokyo Station this May—and yes, everyone’s in pajamas.

From May 9 to 22, 2025, the Sanrio × Piapro pop-up store will be open inside Tokyo Character Street. Fans can snag exclusive merchandise featuring Vocaloid characters like Hatsune Miku paired with Sanrio mascots like Cinnamoroll—all dressed in adorable sleepwear.

Pajamas, Pastels, and Pop Culture Icons

Let’s get one thing straight: this collab is all about being cute and comfy.

Each Vocaloid is paired with a Sanrio mascot, and they’re not just posing—they’re lounging in color-coordinated pajamas, complete with sleepytime accessories. It’s bedtime chic at its most collectible.

This is how they’ve paired up:

• Hatsune Miku × Cinnamoroll

• Kagamine Len × Badtzmaru

• Kagamine Rin × Pompompurin

• Kaito × Tuxedosam

• Meiko × Pochacco

• Megurine Luka × My Melody

Even the mascots are decked out in matching sleep masks. It’s the kind of detail fans obsess over, and frankly, who could blame them?

Where to Find It—and How to Shop If You Can’t Go

Tokyo Character Street, inside Tokyo Station, is where it’s all happening. You’ve got a tight window: just under two weeks to get in there and grab your merch.

For those stuck outside Japan (or just not wanting to deal with the crowds), there’s good news. Tokyo Character Street has an online plaza that ships internationally.

But—small catch—the goods aren’t listed online yet.

That means if you’re overseas and hoping to fill your cart, you’ll need to wait and keep checking the site. No word yet on whether all items will make it online, or only a limited selection.

What You Can Buy—and What It’ll Cost You

The lineup? Pretty stacked. The kind of stuff that ends up on shelves, desks, and, let’s be real, in unopened collector drawers for years.

We’re talking:

• Acrylic stands

• Clear folders

• Stickers

• Ballpoint pens

• Acrylic keychains

• Tote bags

• T-shirts

Prices start at ¥440 (around $2.80 USD) for small items like clear files. On the higher end, a T-shirt goes for ¥4180 (about $26.70 USD).

One thing to note: tote bags won’t be available until May 17—a week into the event. So plan accordingly if that’s your must-have.

Past Collabs Hint at Strong Demand

This isn’t the first rodeo for Miku and Cinnamoroll. They’ve teamed up before—sometimes in sleepy outfits, sometimes not—and the merch has consistently sold well.

You’ve got a crossover of two deeply merchandisable brands here. Sanrio is a licensing juggernaut, and Piapro’s Vocaloids—especially Miku—have a fanbase that’s both loyal and very online.

Short version? Expect lines. Expect sell-outs.

And maybe set an alarm if you’re going the online route.

How This Fits into Japan’s Bigger Pop Culture Economy

Collaborations like this one aren’t just for kicks—they’re business.

Anime and character merchandising is a multi-billion-dollar industry in Japan. Sanrio alone pulled in ¥68.6 billion ($438 million USD) in net sales in 2023, largely driven by licensing and collabs like this. Vocaloid doesn’t release traditional sales figures, but Hatsune Miku alone has spawned everything from concerts to fashion campaigns.

Here’s how collaborations like this impact brand engagement:

One Week, Six Collabs, Infinite Cute

It’s the kind of event that rewards early birds, die-hard collectors, and tourists who just happened to wander into Tokyo Station with a suitcase and no idea what they’re about to stumble into.

But honestly? Even if you don’t know who Kagamine Len is, seeing him snuggled up next to a grumpy Badtzmaru in pajamas might just make your day.