[ZEROBASEONE] Oshi fireworks advertising interview! Behind the scenes of the “project to deliver feelings” that gathered over 400 ZEROSE messages

“I’ll spread my feelings for Oshi all over the night sky!”

By ZB1_EVENT_JP, a fandom that supports ZEROBASEONE,A special fireworks advertisement was held to commemorate the ZEROBASEONE encore performance.🎆✨

In this project, a special performance will be created in which many messages from fans will be included in fireworks and delivered into the night sky!

It was an emotional time for fans from all over the country to share their feelings for ZEROBASEONE through live streaming on YouTube and broadcast on Shibuya Ai Vision.💙

A new form of support: ``Lighting off fireworks for your support.''

Over 400 messages received from fansIt became a special project where our thoughts came together as one.✨

This time, actuallyInterview with ZB1_EVENT_JP, who planned the Oshihanabi advertisement!

My honest impression when I learned about the Oshihanabi advertisementFrom,Reason for deciding to implement it、Impressions of the day, andfanUntil the reaction!

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A new form of support called “Oshi x Fireworks” that was unimaginable at first

BirthdayJAPAN staff:Honestly, what did you think when you first learned about this "Oshihanabi ad"?

Mr. ZB1_EVENT_JP: First of all, I couldn't really imagine the combination of ``Oshi'' and ``Fireworks'', and to be honest, I had no idea what it was.

When I thought of fireworks, I had a strong impression that they were seen at fireworks displays, or used as a way to liven up the end of live concerts or festivals.

“What is the meaning of fireworks as an advertisement?”
“I wonder what kind of benefits there will be.”

That's what I thought at first!

I was really impressed when I saw it! “Fireworks for pushing” spread across the night sky

BirthdayJAPAN staff:Did you watch the YouTube broadcast on that day?

Mr. ZB1_EVENT_JP:I was attending a concert, so I couldn't watch the YouTube broadcast at that time.

I haven't seen Shibuya Ai Vision in person, but I've seen it in the video!

 

BirthdayJAPAN staff: How did you feel when you actually saw it?

Mr. ZB1_EVENT_JP：I was moved and thought, "This is really possible!"

The fireworks at the end were especially impressive.

I think the final fireworks were probably the biggest, and I watched them thinking they were so beautiful until the moment they went off and the flowers opened.

The color of the fireworks was also blue, which was inspired by ZEROBASEONE, as I requested."These fireworks are really fireworks for ZEROBASEONE."I realized that.

A special message experience created by Oshihanabi advertisements that conveys the feelings of fans

BirthdayJAPAN staff：This Oshi fireworks advertisement was a new project for our company, but how did you feel about it as a way to convey your feelings towards Oshi?

Mr. ZB1_EVENT_JP：I think fans usually express their feelings privately on SNS.

Even in the case of advertisements, there is a limit to the number of messages that can be posted.

However, I felt that this Oshihanabi ad was a special means of conveying the messages and feelings of many fans in one place.

 

BirthdayJAPAN staff：Is that the most attractive point of Oshihanabi advertisements?

Mr. ZB1_EVENT_JP: That's right.

I think fans can be more moved by seeing other people's messages, so I felt that this was an unprecedented form of advertising.

I'm worried because there's no precedent... I couldn't read the fans' reactions, so I was really nervous before the event started.

BirthdayJAPAN staff:Did you have any concerns before deciding to do it?

Mr. ZB1_EVENT_JP：I think there is almost no precedent for an advertisement called ``Oshihanabi''. I was a little worried about not being able to read the reactions of the fans when we actually did it.

I was a little worried about how the fans would react, wondering if they'd really like it or why there were fireworks.

 

BirthdayJAPAN staff：But what made you decide to give it a try?

Mr. ZB1_EVENT_JP:The biggest thing is that ZEROBASEONE's last live show with 9 members in Japan was a very special timing.

Another thing that appealed to me was the ability to post messages from fans on the shakudama!

📢[ZEROBASEONE World Tour HERE&NOW Encore Japan Performance Plan]🎆fireworks display🎆

🗓Date
2/18 (Wed)
*Date may change depending on the weather on the day.
⏰Schedule for the day
We will distribute and broadcast the details of the day.✨
🎥18:30~ YouTube LIVE distributionhttps://t.co/txWx2OsQfV
📺22:00〜… pic.twitter.com/ZphhvwVWjx

— ZB1_EVENT_JP (@zb1_event_jp) February 18, 2026

There were so many different messages, and the person in charge of compiling the questionnaire said, ``I almost cried while sorting through them.''

The response was better than expected! A big project born out of over 400 fan messages

BirthdayJAPAN staff:What was the actual reaction from the fans?

Mr. ZB1_EVENT_JP: From what I saw, it was pretty well received!

I have the impression that the response was greater than when we usually put out advertisements.

I saw a lot of messages from fans, and I think a lot of them said they were ``moved.''

 

BirthdayJAPAN staff：I was also looking at SNS, and it seems that there was a lot of response to the message recruitment announcement that I posted at the beginning!

How many messages did you actually receive?

Mr. ZB1_EVENT_JP: That's right. The turnout was much larger than expected.

I couldn't post them all, but in the end it seems like over 400 messages were collected.

 

BirthdayJAPAN staff: Were there any reactions from people who watched the broadcast or the fireworks?

Mr. ZB1_EVENT_JP:I think there were quite a few posts from people who had actually seen it after the live show!

It also made its way to my personal fan account, and I saw reactions like ``Wow! The fireworks were going off'' and ``It was beautiful.''

I think the first thing you see is an image of a message from a fan, and some people commented that the message was ``moving.''

Is the preparation burden “less than half the usual amount”? ! Fireworks ad that went smoothly

BirthdayJAPAN staff：Was there anything difficult during the preparation process?

Mr. ZB1_EVENT_JP:Since the work on my side was mainly preparing and organizing the messages, I was able to leave the entire process and execution of the fireworks to me.

Therefore, compared to normal advertising planning, the preparations were not as heavy and went smoothly.

If I were to give a scale of 10 to how difficult it usually is, I think this time it was less than half.

I didn't have to worry about taking too much time or adding any burden to the preparations!

Happy unexpected! The video production of Shibuya Ai Vision is also attractive.

BirthdayJAPAN staff：Was there anything you wished you had known before the event, or something that was a little difficult to understand?

Mr. ZB1_EVENT_JP: I didn't have any particular problems, but there were some parts of the video shown on Shibuya Ai Vision that were a little different from what I had imagined.

When I looked at the homepage about the Oshihanabi ad, I thought that after the fan's message was read out, only the video of the fireworks would be played.

But in reality, the photo of the message posted on the shakudama was introduced as a video, and then fireworks were played...

Rather"Delightfully unexpected"So, I thought it would be a good idea to introduce the contents of the video in a little more detail on the homepage in advance!

February 20, 2026/22:00~
ZEROBASEONE world tour
In conjunction with the encore performance #Shibuya Ai Vision× #Katagai Fireworks Industry
"Oshi fireworks advertisement" was carried out🎆

This is
This is the video that was actually broadcast on Shibuya Ai Vision.
To your loved ones! Let's send fireworks and love messages💝#ZEROBASEONE pic.twitter.com/B5Qj9LiHQc

— Ninja Hachi@Shibuya Ai8 (@NinjaHachi_) February 19, 2026

Weather support and support system on the day that you can trust with peace of mind

BirthdayJAPAN staff: Is there anything that stands out to you about the support this time around?

Mr. ZB1_EVENT_JP:I was a little worried right before the event, as the fireworks depend on the weather on the day of the event.

However, they kept in touch with me frequently, including on the day of the job, and I was able to understand the situation, so I was able to entrust my work with peace of mind.

I also thought that the fact that you don't need permission from the office (if you belong to an overseas office) is a big thing.

When requesting permission from an agency, it is often difficult to coordinate schedules, as depending on the agency, it may be difficult to get a response or the timing may not work out.

In that respect, I thought it was attractive that no permission was required!

[Exposure, price, special feeling] What is the evaluation based on the three points that the implementer emphasizes?

BirthdayJAPAN staff：Are there any points that you usually focus on when choosing a ``favorite advertisement''?

Mr. ZB1_EVENT_JP: There are roughly three types.

The first is whether it is a place or medium that can be seen by many fans.

The second is the price.

The third thing to consider is whether the project will be a memorable one for the fans and supporters.

I usually focus on these three things.

 

BirthdayJAPAN staff:If you were to evaluate this Oshihanabi ad from these three perspectives, how many points would you give each out of 10?

Mr. ZB1_EVENT_JP: First of all, in terms of ``whether it will be seen by many fans'', I think it would be around 7 points.

It's a little difficult to go to the site and watch it in person, but it will be streamed live on YouTube, so I thought that was a good point.

 

BirthdayJAPAN staff:Is the minus 3 points due to the parts that cannot be seen directly on site?

Mr. ZB1_EVENT_JP: That's right.

I think this time it was held in Niigata, but honestly I think it would be even more special if you could actually see it there.

Regarding the price, I'm a little strict, but I'd give it about 3 points.

I think it would be fine if it was an individual fandom, but since we are planning it as a fan event for the entire group, it is harder to collect donations compared to individual projects.

In that respect, I had the impression that it was a little high.

Regarding the last point, ``Will it be a memento for fans and fans?'' I think it's a 10!

 

BirthdayJAPAN staff:Are there any services like this that you would like to have?

Mr. ZB1_EVENT_JP: I would be happy if there were more types of fireworks, such as heart-shaped ones!

Also, it might be difficult due to copyright issues, but I thought it would be really cool if there was a production where fireworks were set off along with Oshi's song.

[True fan participation advertising] An experience where everyone in the fandom can share their feelings

BirthdayJAPAN staff:If you were to describe this experience in one word, what kind of experience would you say it was?

In short, I think it was an experience of ``delivering my feelings.''

I felt that it was a project with a strong message!

 

BirthdayJAPAN staff：If you have another chance, would you like to do Oshihanabi advertising?

Mr. ZB1_EVENT_JP:That's right. I would definitely like to do it again at a special time, such as a big anniversary or anniversary.

 

BirthdayJAPAN staff:Finally, what kind of people would you recommend this Oshihanabi ad to?

Mr. ZB1_EVENT_JP: After all, I would like to recommend it to people who want to celebrate an important day or to fandoms who want to make their fans' thoughts a reality!

In a sense, the Oshihanabi advertisement was very attractive as a ``fan participation type'' advertisement.

I think it's a great project for the entire fandom to create, as it allows us to deliver the messages of many fans together.

I hope everyone will give it a try!

Summary

This Oshihanabi ad was realized as a new form of support to convey the feelings of fans through fireworks at the special timing of ZEROBASEONE's encore performance!

At first, they were surprised by the combination of ``Oshi and Fireworks,'' but when they saw the actual fireworks, they were impressed and said, ``This is really possible.''

In particular, the great appeal of Oshihanabi advertising is that the messages gathered from fans took shape as a project and we were able to convey our feelings along with the fireworks.🎆

If you want to convey your feelings to someone at an important moment, why not try the “experience of sending your feelings to your loved ones through fireworks”?✨

BirthdayJAPAN will do our best to support you so that your “feelings for Oshi” become a reality!

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