The short answer: Seongsu pop-up stores in September 2026 have different closing dates: ma:nyo finishes on September 21, Pokémon Pokopia and Anua on September 29, and Olive Young’s Sanrio CITY LOG at N Seongsu on September 30. Choose by your visit date before choosing by brand.
Checked September 19, 2026, Korea time. This is a researched event guide, not a report of personal visits. All dates below are in 2026; this is a selected list, not every pop-up in Seongsu.
Which Seongsu pop-ups fit your travel dates?
For September 20–21, all five events below fall within their announced dates. For September 22–29, leave ma:nyo off your list. On September 30, the remaining options here are Sanrio CITY LOG and 10MONTH. For October 1–11, only 10MONTH extends into those dates. Announced dates do not guarantee a reservation or an available entry slot.
| Event | Announced dates | Choose it for | Hours / planning note |
|---|---|---|---|
| ma:nyo Soybean Mill House | September 9–21 | Cleansing-product experience | 11:00–20:00; last entry 19:30 |
| Pokémon Pokopia × MUSINSA | September 12–29 | Character merchandise and a concept-store setting | 11:00–22:00; last entry 21:30 |
| Anua PDRN SHOWER | September 19–29 | Beauty pop-up at Trendpot, Olive Young N Seongsu | Check the event notice; store hours are not an event timetable |
| Olive Young × Sanrio CITY LOG — N Seongsu | August 30–September 30 | Sanrio collaboration; N Seongsu programme started September 6 | Check the current in-store programme |
| 10MONTH: A Gallery of Everyday Life | September 12–October 11 | Clothing try-ons; separately booked styling sessions | Check the brand’s visit-day notice |
Where are the venues, and how do you arrange a visit?
ma:nyo: visiting by September 21?
Paste into Naver Map: 서울 성동구 연무장길 99 — 마녀공장 소이빈 방앗간.
The brand presents its Pure Soybean cleansing range through a mill-themed experience. Its official notice gives 11:00–20:00 hours, with admission ending at 19:30. This is the earliest closing event in this selection, so keep it out of a late-September itinerary.
The brand’s profile links to its Naver booking page. Open that page for the date you want; the existence of a booking page does not mean a slot is available. The official ma:nyo event announcement confirms the venue, dates and hours. Gifts mentioned in launch posts should not be treated as a promise of stock on your visit day.
Pokémon Pokopia: shopping or just browsing?
Paste into Naver Map: 서울 성동구 성수이로 62 — 무신사 메가스토어 성수. The event is on the first floor.
The Pokémon Korea and MUSINSA announcement gives September 12–29 and 11:00–22:00. MUSINSA’s Kakao reservation listing sets last entry at 21:30 and describes keyrings, mugs and T-shirts among the collection.
At our September 19 check, the live ticket listing showed 예약마감 (reservations closed). Do not read that as confirmation that walk-in entry is available, or that the event itself has ended. Check the current admission notice before making this your only stop. Merchandise availability is separate from admission.
Anua and Sanrio: are these the same event?
Paste into Naver Map: 서울 성동구 연무장7길 13 — 올리브영N 성수, 팩토리얼 성수. Olive Young’s store listing confirms the building address.
These are different programmes. Olive Young’s September announcement lists Anua PDRN SHOWER at Trendpot by Olive Young Seongsu for September 19–29. It separately lists Sanrio CITY LOG at Olive Young N Seongsu through September 30, with the N Seongsu programme beginning September 6.
The date trap: the same announcement lists the earlier Sanrio Trendpot event as August 30–September 13. That portion has ended. A saved Sanrio poster is therefore not enough: match both the venue label and its dates. In the building, ask for Anua PDRN SHOWER or the ongoing Sanrio CITY LOG programme rather than just “the pop-up.”
Treat these as one building stop when plotting your route, but check each programme’s queue and participation terms. The September overview does not establish a universal walk-in policy or foreign-phone booking process. Store opening hours should not be substituted for pop-up operating hours, and a purchase benefit is not the same as a free admission gift.
10MONTH: want a clothing stop that continues into October?
Map search: 텐먼스 성수 팝업, 서울 성동구 연무장11길 11. The brand announcement gives September 12–October 11.
This is a clothes-shopping option rather than a character-goods event. The organiser’s September 14 release describes clothing try-ons, a one-to-one styling programme and complimentary length alterations for purchased qualifying trousers. Styling sessions use a separate first-come reservation event on the brand’s Instagram; do not assume an ordinary store visit includes a session. Confirm the alteration collection time before buying if you are leaving Korea soon.
How should you group the stops?
Save the four building addresses above first. Anua and Sanrio share the N Seongsu building, so they do not need two journeys. Keep any confirmed reservation as your fixed stop, then compare the remaining addresses in Naver Map. This is a way to organise the shortlist, not a timed walking route: no walking or queue times have been measured for this guide.
A simple plan is one must-see event and one backup that is still running on the same date. If your priority is Pokémon merchandise, resolve the admission question first. If you arrive after September 21, do not spend time navigating to the ma:nyo event. For a September 30 visit, remove both Pokémon and Anua as well.
What should visitors without a Korean phone number check?
Before making a special trip, open the linked booking page and check whether you can complete its phone or identity-verification step. We have not completed these bookings with a foreign number, so this guide does not label them foreign-number compatible. A useful question to show staff is 한국 전화번호 없이 현장 대기 등록이 가능한가요? — “Can I join the on-site waiting list without a Korean phone number?” This is a question to ask, not a guarantee that on-site registration exists.
Frequently asked questions
Are all five pop-ups free to enter?
This guide does not claim that. The notices checked do not establish one admission price across all five events. Check the event’s booking or admission notice; merchandise, purchase-linked gifts and booked services have their own conditions.
Does a reservation-closed message mean the shop has closed?
No. The Pokémon listing showed reservations closed while the organiser’s event dates ran through September 29. It does not by itself establish whether later dates or walk-in access are available.
Can I use this list for an October visit?
Only the 10MONTH listing here extends into October, through October 11. The other four end in September; do not reuse this September selection as an October calendar.
What if I am coming from Incheon Airport?
This list is for a Seoul outing, not a recommendation to squeeze Seongsu into a short airport connection. First use our guide to deciding whether you can leave Incheon Airport. For the return day, planning the hours before your flight covers the departure-side decision. If you need toiletries rather than a special event, our Incheon Airport Olive Young guide is a different, airport-based option.
Visiting next month? See the October 2026 Seongsu pop-up dates and booking guide for events that continue into October and their closing dates.
