KiiiKiii’s WhyKiiiKiii has an August Korean release date and September Japanese physical-edition listings. Those dates describe different market releases. The later Japanese CD date does not mean the EP first became available everywhere in September.
Official information checked September 10, 2026. Times use the zone stated beside each date.
Watch Pop Off Pop Off
The original music video is published by STARSHIP. KiiiKiii’s Korean official artist page lists WhyKiiiKiii as the August 10 EP. The Apple Music listing confirms that date and six songs.
All six songs
- Ever2Late!
- Hey Hi
- Pop Off Pop Off
- SWEET SOUR
- Candy Pink Magic Hole Flip Phone (나 어떡해)
- Blue Hour
The sequence appears on Universal Music Japan’s official Guide Book edition page. Pop Off Pop Off is third in that listing; the video above gives you the official visual for that song.
Which editions have the September date?
The Japanese label’s discography dates Guide Book, Amenities and Summer Issue physical editions to September 8, 2026. Summer Issue is explicitly listed as a random version.
The Guide Book page lists a photobook, CD-R, air-ticket card, random ID card and random photocard. Those are specifications for that named edition; they do not establish identical inclusions for Amenities or Summer Issue.
How to avoid ordering the wrong version
Keep the market, release date and edition name together when comparing stores. A later regional CD listing can coexist with an earlier Korean release without indicating extra songs. Check the written tracklist for the actual music and the inclusion list for the collectible items.
If you want a particular cover or member insert, confirm whether it is selectable or random before checkout. The label directs buyers to the seller for stock information, so the existence of an official product page should not be read as a guarantee that it is currently available.