Koku opens Kozushima to international travelers through new booking platform

Koku Inc. has made Kozushima, one of Tokyo’s Izu Islands, bookable for international travelers for the first time through Tokyo Islands Explorer. The launch starts with a private house stay bundled with round-trip ferry service, and more Kozushima packages are planned.

Why it matters: - Kozushima is now easier for overseas visitors to reach because ferry and lodging can be booked in one online transaction. - The launch opens one of Tokyo’s most remote islands to a wider international audience. - Koku Inc. is using the new package to expand access to Tokyo’s Izu Islands one island at a time.

What happened: - Koku Inc. opened Kozushima to international travelers through its English-language platform Tokyo Islands and booking site Tokyo Islands Explorer. - The first offer, Kozushima Ocean & Stars Retreat, is available now. - The package combines round-trip ferry travel from Tokyo with a private entire-house stay on Kozushima. - Booking is available online for travel starting Sept. 28, 2026.

The details: - The first package centers on Anchor, a private house rental that opened in 2023 and accepts one group per day. - Anchor sleeps up to eight guests across three bedrooms, including one Japanese-style room and two Western-style rooms. - The house includes a full kitchen, Wi-Fi, spacious living areas, a balcony and a garden with barbecue access. - The property is about a 10-minute walk from Maehama Port and about five minutes from the beach. - A supermarket, restaurants and a post office are nearby. - The package is self-guided, with no tour escort. - Travelers can book one night and two days or longer. - Optional barbecue charcoal is available for a small fee. - A hot spring is a short drive away. - As of Oct. 31, 2026, pricing runs from ¥50,200 to ¥111,140 per adult, depending on season, ferry class and group size. - The package includes round-trip ferry, private-house accommodation and applicable taxes. - The booking page is available here.

Between the lines: - Kozushima has long been known for its volcanic landscape, sea views and starry night skies, but the island has been harder for international travelers to book in a simple way. - Bundling transport and lodging removes a common planning hurdle for first-time visitors. - The move also signals that Koku Inc. sees demand for more self-guided, flexible island travel rather than fixed tour groups. - The company said the first package is the start of additional Kozushima stays and guided experiences.

What's next: - Koku Inc. plans to add more Kozushima offerings to Tokyo Islands Explorer. - Future products will include additional stays and guided experiences. - The company said it will keep expanding access to Tokyo’s outlying islands for international travelers. - Tokyo Islands Explorer already sells ferry-and-stay combinations and standalone ferry bookings across Tokyo’s nine outlying islands.

The bottom line: - Kozushima is now bookable in a way designed for foreign visitors, with a ferry-plus-stay package that turns a hard-to-arrange island trip into a single reservation.