by The popular children’s anime Oshiri Tantei (Butt Detective) has introduced a brand-new opening sequence since its debut in 2018. The updated opening premiered alongside the latest episodes on April 4, 2026, bringing fresh energy to the long-running series.
Fans can now enjoy a revamped version of the iconic theme song performance, complete with new visuals, characters, and a fun surprise element.
New Opening Sequence – What’s Changed?
The new opening sequence is set to the familiar theme song:
“Puputto Fumutto Kaiketsu Dance”
Key Highlights:
- Features a wide range of characters from the series
- Includes both:
- Friendly characters
- Rival “Phantom Thieves”
Signature Moment:
All characters perform the famous:
“Oshiri Dance” (a playful dance involving shaking their hips)
Characters Featured in the New Opening
The updated sequence includes appearances from:
Main Characters:
- Oshiri Tantei and his allies
Phantom Thieves:
- Phantom Thief G (leader)
- Phantom Thief T, H, and Q
- Phantom Thief Z and N
A standout moment is the action-packed scene where Phantom Thief Z and N confront Oshiri Tantei.
3 Different Opening Versions – A Fun Surprise
One of the most exciting updates is:
Multiple Versions:
- A total of 3 opening variations have been created
How It Works:
- Certain scenes change depending on the episode
- Viewers won’t know which version they’ll see until it airs
The currently revealed version:
- “Anything Goes Solving Club” version
This adds:
- Replay value
- Viewer engagement
- A sense of surprise every week
Broadcast Details
Schedule:
- Every Saturday at 9:00 AM (JST)
- Channel: NHK E Tele
New episodes began airing on April 4, 2026.
What Is Oshiri Tantei? (Beginner-Friendly Guide)
If you’re new to the series:
Story Overview:
- Follows a detective with a unique appearance (a face shaped like a butt)
- Solves mysteries using:
- Intelligence
- Observation
- Humor
Target Audience:
- Primarily children
- Also enjoyed by families and adults
About the Original Work
- Created by Troll (author duo)
- Expanded into:
- Picture books
- Apps
- Novels
- Anime and films
Sales:
- Over 35 million copies sold worldwide
A hugely successful franchise across multiple formats.
Why This Update Is Important
1. First Opening Renewal Since 2018
Marks a major milestone for the anime.
2. Keeps the Series Fresh
After 8 years, the update adds new excitement.
3. Interactive Viewing Experience
Multiple versions make each episode unique.
4. Strong Fan Engagement
Encourages viewers to:
- Watch regularly
- Compare different versions
New Updates & Industry Trends
- Long-running anime are refreshing openings more frequently
- Interactive elements (like multiple versions) are becoming popular
- Children’s anime continues to evolve with modern engagement strategies
Oshiri Tantei is adapting to current trends while keeping its charm.
Beginner Tips Before Watching
- Start with any episode—it’s easy to follow
- Focus on the mystery-solving aspect
- Enjoy the humor and visual gags
It’s a fun and relaxing anime for all ages.
Final Thoughts
The refreshed opening sequence of Oshiri Tantei brings a fun and modern twist to a beloved classic. With new visuals, exciting character appearances, and multiple versions to discover, the anime continues to evolve while maintaining its signature charm.
Whether you’re a longtime fan or a newcomer, now is a great time to jump into the world of Oshiri Tantei.
