Event Overview
AIDIS Inc. has officially announced a limited-time Last Cloudia x That Time I Got Reincarnated as a Slime collaboration event, kicking off March 12, 2026 in the long-running mobile RPG Last Cloudia. The news was shared via an official press release carried by Anime News Network, positioning the crossover as a major beat for both gacha RPG players and anime fans who follow the ever-expanding “Tensura” universe. According to the announcement, the collab is tied directly to the popularity of the anime and will be available for a limited window once it goes live. [1]
For Otaku Den users, the headline is simple: if you’ve been waiting for a new reason to revisit (or finally try) the game, this is one of those “now’s the time” events. Collaboration campaigns typically bring exclusive units, themed story content, and time-limited banners—exact details will likely roll out closer to launch, but the date is locked in, and the anime partnership is confirmed. And yes—this is very much an “anime collaboration event” in the gacha sense: limited-time, collectible, and built to get fans logging in daily.
Key highlight: the collaboration is with That Time I Got Reincarnated as a Slime—a franchise known for its huge cast and fan-favorite power fantasies—making it a natural fit for a character-collection RPG. [1]
Major Announcements
The core announcement is the crossover itself: Last Cloudia will host a limited-time collaboration event with the popular anime That Time I Got Reincarnated as a Slime starting March 12, 2026, as confirmed by AIDIS Inc. [1] While the press release coverage focuses on the event reveal and start date, the implications for players are immediate.
Here’s what we can responsibly take away from the confirmed information—and what it means in practical terms for anime and mobile RPG fans:
- Event confirmed + start date set (March 12, 2026). This is not a “teaser,” it’s a dated announcement from the publisher. [1]
- Limited-time availability. If you want the crossover content, you’ll need to show up during the event window (the end date wasn’t specified in the source coverage, so keep an eye out for the full schedule). [1]
- The collaboration is explicitly with the anime property. This matters because anime collabs tend to emphasize recognizable versions of characters and iconography fans expect. [1]
Otaku Insider’s take
This is one of those collaborations that feels inevitable—in a good way. That Time I Got Reincarnated as a Slime (a.k.a. Tensura) is tailor-made for crossover events: iconic character designs, a wide range of combat archetypes, and a fanbase that’s already comfortable with collecting “variants” of favorites.
From a broader “anime x gacha” perspective, the timing is also smart. The mobile RPG space is crowded, and long-running titles live and die on their ability to create moments that cut through the noise. Attaching a major anime name like That Time I Got Reincarnated as a Slime gives Last Cloudia an instant visibility spike—and for fans of the series, it’s a new way to engage with the franchise outside weekly episode drops.
What we’re watching for next (and what typically defines whether a collab is “must-play” or “nice-to-have”):
- Which characters are included (Rimuru is the obvious headliner, but the supporting roster determines the hype ceiling).
- Whether the collab includes a dedicated story scenario that feels like a real crossover rather than a cosmetic drop.
- How generous the campaign is (login bonuses, free pulls, and event farming determine whether newcomers stick around).
For now, the confirmed takeaway is simple: the collaboration is happening, it’s limited-time, and it starts March 12. [1]
Notable Moments
Even without a stage show or convention panel attached, this announcement has the kind of “event energy” anime fans recognize: a publisher-confirmed date, a massive crossover IP, and the promise of limited-time content that will dominate community chatter for weeks.
The most notable “moment” here is the clarity of the timing. Gacha collaborations often get teased for months with vague windows, but this one arrives with a firm start date right out of the gate—March 12, 2026—which immediately turns the conversation into planning mode (saving currency, reinstalling the app, and rallying friends). [1]
And for Tensura fans specifically, just seeing That Time I Got Reincarnated as a Slime attached to another major crossover is a reminder of how durable and flexible the franchise has become: it can fit action RPGs, comedy beats, and serious power scaling without losing its identity.
What’s Next
The immediate next step is to watch for full event details as March 12 approaches: banner/unit reveals, event duration, and any special login or mission campaigns. The source coverage confirms the collaboration and start date, but doesn’t list every component—so expect AIDIS to drip-feed specifics in the lead-up. [1]
If you’re planning to participate, now is the time to:
- Revisit the anime so the crossover hits harder when you see familiar faces and references: That Time I Got Reincarnated as a Slime.
- Track announcements for the event end date and any limited-time rewards you’ll need to prioritize.
- Budget your time: collabs can be grindy, and the best rewards often sit behind daily participation.
Otaku Insider will be watching for the next wave of information—especially character confirmations and whether the collaboration leans into story content or focuses primarily on collectible units. Either way, this is shaping up to be one of the more exciting 2026 anime collaboration events for mobile RPG fans.
Sources: Anime News Network press release coverage of the announcement. [1]
