ROOTED IN JAPAN. CONNECTED TO WEB3.

Japanese property.
A digital dimension.

Acquire a property. Or choose its digital twin. Discover how Japanese real estate connects with crypto, through the asset, the people and the agreement behind it.

01 / SAPPORO, JAPANOne apartment. A platform for more.
Concept illustration of a building with a digital information overlay
FEATURED PROPERTY / 001↗
SAPPORO · HOKKAIDOCasa WistariaA real property. A digital counterpart.Concept illustration · not a site photograph or measured model.
REAL PROPERTY FIRSTLOCAL OPERATING TEAMCHAIN & ASSET CHOICERIGHTS DEFINED BY AGREEMENT

01 / TWO WAYS TO PARTICIPATE

Choose what
you want to acquire.

Property ownership and digital-twin rights are different. Understand the distinction, then discuss the route that fits your plans.

A

PHYSICAL PROPERTY

Own the property.

Purchase the real estate through the required documents, transaction and title-transfer registration. Goodhills acts as the buyer-side broker.

What you acquire
Property ownership through contract and title registration
Process
Document review → contract & settlement → title registration

The fiat-currency bidding route for the physical Casa Wistaria property is presented on SUNNY CASE 001.

Explore fiat bidding on SUNNY↗Discuss property acquisition↗
B

DIGITAL TWIN ONLY

Choose the digital twin.

ZWEISPACE JAPAN retains ownership of the property. You can choose an arrangement in which it pays digital-twin-side rental payments in an agreed coin or token.

What you acquire
Digital-twin rights defined in your agreement
Process
Agree terms → contract → digital registration & payments
Discuss a digital twin↗

An NFT transfer or RegisterKnight record does not itself transfer property title. The digital-twin-only route does not involve property title transfer; agreements and any required documentation are handled separately.

02 / PEOPLE BEHIND THE PROPERTY

Digital access.
A real operating team.

For Casa Wistaria, ownership, asset management, local property management and buyer-side brokerage each have a defined role.

01

PROPERTY OWNER

ZWEISPACE JAPAN

Holds the property. Under the twin-only arrangement, retains title and makes digital-twin rental payments in the agreed asset.

02

AM / ASSET MANAGEMENT

Maximum

Akasaka, Tokyo

Responsible for asset management (AM) for Casa Wistaria.

03

PM / PROPERTY MANAGEMENT

Apaman Plaza

Sapporo, Hokkaido

Responsible for local property management (PM) in Sapporo.

04

BUYER-SIDE BROKERAGE

Goodhills

Acts as the real-estate broker on the buyer’s side of the property transaction.

03 / CONNECTING THE LAYERS

Choose the chain.
Choose the payment asset.

The unit’s chain, its digital record and the payment asset serve different purposes. Here is how they fit together.

01 / UNIT NETWORK

Where the unit lives

ZweichainBNB Smart ChainOther requested chains

Units can use Zweichain, Binance Smart Chain (BNB Smart Chain), or another requested chain, with the configuration confirmed for each arrangement.

02 / DIGITAL RECORD

Zweichain + RegisterKnight

Use Zweichain and register through RegisterKnight. Digital records for the property and its twin are separate from real-estate title-transfer registration.

Record and issuance status are checked per property.
03 / PAYMENT ASSET

How payments are made

ZWCUSDTBTCOther assets

ZWC is an option for digital-twin rental payments. USDT, BTC and other assets can also be discussed, with the asset, transfer network, conversion method and payment terms agreed individually.

Choosing the unit’s chain does not automatically select the payment network. Payment amounts, frequency and costs are established in the agreement.

PROPERTY / 001Supplied photographs of Casa Wistaria: exterior, interiors and surroundings
Exterior, interiors & surroundings

Supplied September 24, 2026. Photograph dates are unknown; current furnishings, facilities and surroundings remain to be checked.

Open the photo sheet ↗

THE FIRST CHAPTER / SAPPORO

Casa Wistariaカサ・ウィスタリア

One apartment in Sapporo is the first case for the platform. Explore the property brief, a 3D spatial concept and the case study to understand the physical and digital sides.

Location
Chuo-ku, Sapporo, Japan
Property owner
ZWEISPACE JAPAN
Public NFT status
Pre-mint · evidence not yet anchored

The 3D viewer is an approximate model of a similar layout, rather than a measured scan of the specific unit.

INCLUDED IN YOUR DIGITAL TWIN

A bookshelf. A closet. Your space.

Your digital twin comes with a bookshelf and a closet.

Explore the current concept previews through these links.

04 / TECHNOLOGY, WITH A ROADMAP

Built on experience.
Looking toward the quantum era.

From operating ZweichainPublic to developing quantum-resistant chains, the roadmap distinguishes reported work from planned next steps.

  1. SINCE NOVEMBER 2021

    ZweichainPublic

    The sixth-generation EVM chain, operating since November 2021 according to the project team.

    Operating · project-reported
  2. EVM QUANTUM-RESISTANCE VERIFICATION

    Verification completed

    The project team reports completed quantum-resistance verification of its ZweichainPublic EVM. The scope, methodology and report are not published on this page.

    Completed · project-reported
  3. NEXT CHAPTER

    ZWEI-Q / NamazuPoTGL

    Quantum-resistant chains ZWEI-Q and NamazuPoTGL are under development. Migration to ZWEI-Q is planned; timing and scope will be communicated separately.

    In development · migration planned

05 / A FEW CLEAR ANSWERS

Clarity before
the next step.

Does acquiring an NFT make me the property owner?

Acquiring an NFT alone does not transfer real-estate title. The property route requires documents, contract, settlement and title-transfer registration. RegisterKnight registration is a separate process.

Can I choose only the digital twin?

Yes. Under that arrangement, ZWEISPACE JAPAN retains the property and pays digital-twin-side rent in the agreed coin or token. Rights, amounts, frequency, costs, transfer and termination terms are defined in the individual agreement.

Can I use another coin or chain?

Payment preferences include ZWC, USDT, BTC and other assets. For the unit, discuss Zweichain, Binance Smart Chain or another requested chain. The asset and transfer-network combination is confirmed individually.

Can I purchase or send funds on this page?

Start by discussing your preferred route, chain and asset. Terms, the agreement and settlement instructions are established before proceeding. This page does not execute purchases or payments.

Will the platform include other properties?

Casa Wistaria is the first case, starting as an experiment within SUNNY. The plan is to bring more properties to this NFT platform, with each property’s owner, operating team and acquisition terms explained individually.

YOUR NEXT STEP

Start with
your preferences.

Choose an acquisition route, unit network and payment asset to prepare your inquiry. It is fine to leave a choice open.

Selecting options does not send an inquiry. Review and submit it on the next page.

Continue to the Goodhills inquiry form to add your questions and details.

Payment networks and detailed terms are confirmed during the discussion.