Current Listings, Risks, and Buyer Guide
Japan has very little visible private-island inventory, and the purchase price is only one part of the diligence. This page tracks Aqua Styles’ public Japan island inventory and outlines the title, access, utility, coastal, and execution issues buyers should resolve before treating an island as a real acquisition target.
Last checked: March 16, 2026. The source pages showed 7 active listings, 3 sold or archived records, and 2 incomplete placeholder entries. Akiyaz does not represent Aqua Styles on these listings, and pricing or availability can change at the source.
Illustrative island and coastal context
Because the source listing pages do not expose a clean reusable gallery or listing-specific video feed, the media below is regional context only. Every image and video is licensed from Wikimedia Commons or a public-domain source and is clearly attributed.
Illustrative Okinawa flyover video
Source: Benlisquare / Wikimedia Commons, CC BY-SA 4.0. This is regional context footage, not listing-specific footage.
Public Japan island inventory snapshot
The table below consolidates every publicly visible island record on Aqua Styles’ Japan island page. The active set is small and heavily skewed toward Okinawa, Mie, and Kyushu-adjacent waters. Several records also require careful source reconciliation before any serious underwriting.
| Island | Listing ID | Asking price | Location | Area | Access and notes | Source |
|---|---|---|---|---|---|---|
| Myokojima | ASI 001 | JPY 43,000,000 | 1456 Heizocho, Goto, Nagasaki Prefecture | 1,983 sqm (about 600 tsubo) | About 20 minutes by car from Fukue Airport, then about 5 minutes by boat from a nearby port. White sand beach, unusually strong access from the mainland, and flat land that Aqua Styles says can be built on. | Source |
| Komushirojima | ASI 002 index / ASI 003 detail | JPY 70,000,000 | Katada, Shima, Mie Prefecture | 20,553 sqm | About 25 minutes by car from Kashikojima Station to Sakishima Marina, then about 5 minutes by boat. Close to the main island, with residential land and a detail-page claim that electricity could be brought in because transmission infrastructure already crosses the site. | Source |
| Icchakushima | ASI 003 index / ASI 004 detail | JPY 120,000,000 | Icchakushima, Ohara, Kumejima, Okinawa Prefecture | 55,285 sqm (about 16,753 tsubo) | Close to Kumejima Airport; the source says the island is so close to Kumejima that it can be reached on foot at low tide. Rare full-island sale in Okinawa, with detail-page claims that building may be possible with environmental and fishery approvals and that old utility infrastructure may still exist. | Source |
| Urito | ASI 006 | JPY 500,000,000 | Takanakogen, Taketomi Town, Okinawa Prefecture | 36,797 sqm (11,131 tsubo) | Between Iriomote and Kohama; the source says it can be reached on foot from the Iriomote side at low tide. Aqua Styles presents this as an exceptionally rare Okinawa ownership-transfer island with strong survival, camping, and nature-use appeal. | Source |
| Marushima | ASI 007 | JPY 43,000,000 on index / JPY 44,000,000 on detail | Maruyama, Michikata, Minamiise, Mie Prefecture | 1,022 sqm (309.2 tsubo) | Roughly 30 meters off the mainland; the source says there is about 60 tsubo of flat land where construction may be possible. Likely one of the easiest islands on the list for infrastructure because it sits just offshore, though water, coast-use, septic, and fishery approvals are still required. | Source |
| Unnamed island next to Mazaki Island | ASI 009 | JPY 11,000,000 | Mazaki, Wagu, Shima, Mie Prefecture | 495 sqm | Adjacent to the inhabited island of Mazaki. The smallest island on the list, framed by Aqua Styles as a private-base play where a log cabin or container house could make the site usable quickly. | Source |
| Kuroshima / Sasa Island | ASI 011 | JPY 180,000,000 | 3983-1 Oura, Ariake-machi, Amakusa, Kumamoto Prefecture | 20,940 sqm (6,345 tsubo) | Presented on the source site as an island close to the Amakusa coast. Fishing-focused island with year-round harvest notes, already-cleared land, and a source-page suggestion that hot-spring drilling may be possible. | Source |
Sold and archived island records
These entries were still visible on the source website but marked sold or archived. They are useful as market context because they show the larger island sizes and regions that have appeared publicly before.
| Island | Listing ID | Status | Location | Area | Notes | Source |
|---|---|---|---|---|---|---|
| Takeshijima | Not stated | Sold | Ehime Prefecture | 78,537 sqm + 2,474 sqm + 409 sqm | Large beach island package that Aqua Styles says included two additional islands. | Archived |
| Ainoshima | ASI 010 | Sold | Ainoshima 1656 and roughly 30 additional parcels, Mitsu, Akitsu-cho, Higashihiroshima, Hiroshima Prefecture | 79,149.76 sqm (23,942.80 tsubo) | Legacy resort-development site with a long ownership history and a large land package. | Archived |
| Kamitsukuri Island | ASI 012 | Sold | Hayato-cho, Kirishima, Kagoshima Prefecture | 150,280 sqm (45,489 tsubo) | Large Kagoshima island with an existing large structure and electricity, but no water source confirmed on the detail page. | Source |
Source inconsistencies to reconcile
- Komushirojima is ASI 002 on the index page but ASI 003 on the detail page.
- Icchakushima is ASI 003 on the index page but ASI 004 on the detail page.
- Marushima is priced at JPY 43,000,000 on the index page and JPY 44,000,000 on the detail page.
Incomplete records still visible
- ASI 005: The index includes an ASI 005 placeholder row with no usable public details.
- ASI 014: The index includes an ASI 014 placeholder row with no usable public details.
These placeholders suggest the public page is curated manually and may not be a fully normalized inventory feed.
What island acquisition in Japan actually requires
A private island transaction is rarely just a simple land closing. The hard work is confirming what can be owned, reached, serviced, insured, and operated after the deed changes hands.
1. Registry and parcel match
Confirm the registered parcels, lot boundaries, shoreline edges, and whether the advertised island package exactly matches title and tax records.
2. Access and landing rights
A short boat ride on paper is not enough. Buyers need a repeatable access plan, viable landing conditions, and clarity on whether docks, ramps, or shoreline works are possible.
3. Utilities and wastewater
Power, water, wastewater, and telecom can dominate the budget. Islands close to shore may still require meaningful engineering work before they are practically usable.
4. Coastal and environmental review
Buildability should never be assumed from ownership alone. Coastal controls, natural-park issues, fishery relationships, drainage, and excavation limits all need site-specific review.
5. Weather and resilience
Typhoon exposure, storm surge, erosion, slope stability, and insurance practicality matter more on islands than on ordinary inland property.
6. Holding costs and execution
Closing expenses, surveying, marine transport, security, vegetation control, tax structuring, and post-acquisition maintenance often change the investment case materially.
Practical acquisition workflow
- Shortlist only the islands that still make sense after a first-pass access and infrastructure screen.
- Pull registry, cadastral, and tax records and reconcile them against the marketing package.
- Run municipal, coastal, and engineering diligence before assuming any building or hospitality concept is viable.
- Model the full execution budget, not just the asking price, including access works and utility strategy.
- Move to negotiation only after legal, technical, and operational red flags are surfaced.
How Akiyaz can help
Akiyaz can help buyers pressure-test whether a listed island is genuinely actionable, coordinate local diligence, and separate romantic marketing from execution reality. That usually means translating source material, organizing early-stage site intelligence, and framing the questions your lawyer, surveyor, engineer, and tax advisor should answer before money is committed.
This page is informational only and should be paired with Japanese legal, tax, engineering, and local-regulatory advice on any live transaction.
