Exhibit 99.1

Convocation Notice of Extraordinary General Meeting of Shareholders

and Common Stock Shareholders Meeting

Date of Dispatch: June 3, 2026

To: All Shareholders

Dear Shareholders,

We would like to express our sincere appreciation for your continued support.

You are hereby notified that the Extraordinary General Meeting of Shareholders will be held as set forth below. We kindly request your attendance.

If you are unable to attend the meeting, please indicate your approval or disapproval on the enclosed proxy form, affix your seal/signature, and return it to us so that it arrives no later than 5:00 p.m. on June 17, 2026.

Sincerely yours,

Hiroshi Furukawa

Representative Director

PicoCELA Inc.

2-34-5 Nihonbashi Ningyocho, Chuo-ku, Tokyo Japan

Details

Please bring the proxy form with you and submit it at the reception desk on the day of the meeting.

Reference Materials Related to Solicitation of Proxy Voting Rights

(Underlined portions indicate amendments.)

Subject to the Shareholders’ approval of Proposal No. 1 Partial Amendment to the Articles of Incorporation, the Company proposes to delegate to the Board of Directors the preferential issuance of Class A Preferred Shares and allotment of the Class A Preferred Shares as stated below.

Reason for the preferential issuance:

This issuance of Class A Preferred Shares is a “preferential issuance of equity sharers”. Reason for the preferential issuance is to raise capital urgently to cope with our current unfavorable financial position and continue to operate as a going concern. We concluded that under the current financial condision, it is not possible to raise the capital required to continue as a going concern by issuing shares at market value and we are proposed by a particular potential investor of interest to issue a large number of shares with voting rights at a price lower than the market price. We concluded that raising capital by preferential issuance of equity shares is the fundamental and ultimate way to serve the shareholders’ interest. With this new capital, we will conduct a restructuring and improve our business operation.

Please note the Preferential Issuance of Class A Preferred Shares above will be allotted to “Special Subscriber” defined under the Article 206-2(1) of the Companies Act in Japan as a subscriber who is going to own more than 50% of the Company’s outstanding voting shares at the time of the issuance of the securities subscribed.

The description of the “Special Subscriber” and the required disclosure related is as below:

Although this proposal was approved at the April 30, 2026 Extraordinary General Meeting of Shareholders, we are reproposing this proposal because the time limit for the election to become effective has expired.

In order to reinforce the supervisory function on the Company’s management, we request the election of two Directors who are not Members of Audit and Supervisory Committee. The election of all of the candidates becomes effective when Proposal 2 above is approved and the payment for the issuance of Class A Preferred Shares at Proposal 2 is made.

Candidate 1): Lim Kien Leong (37 years old) Number of the Company’s shares held: 0

Mr. Lim Kien Leong is the Co-founder and CEO of TranSwap Private Limited. He oversees the day-to-day business operations, as well as the company’s strategic direction and business developments. Lim Kien Leong was previously appointed as the Chief Legal Officer of TranSwap Private Limited and was responsible for all of the company’s legal and regulatory issues, ensuring the company remained compliant with relevant authorities’ regulations. Prior to TranSwap, he gained extensive experience in the field of arbitration, civil and commercial litigation, and corporate law in Singapore and Australia. Lim Kien Leong graduated from the University of Sydney with his Bachelor of Commerce and Bachelor of Laws degrees.

Candidate 2): Jong Han Rey Foo (59 years old) Number of the Company’s shares held: 0

Mr. Jong Han Rey Foo is a partner at KSCGP Juris LLP in Singapore. He was admitted to the Singapore Bar in 1992 and has been practicing law for 25 years. Jong Han Rey Foo has been practicing corporate law, and his present areas of practice include conveyancing, corporate law and civil litigation. After qualifying in 1990 as a Barrister, Jong Han Rey Foo obtained his Master of Law in Corporate and Commercial Laws from Queen Mary College, University of London in 1991.

Notes:

End

Proxy Form

To: PicoCELA Inc.

I (We) hereby appoint [(Name):                                           ] as my(our) proxy and delegate the following authority.

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Authorized by:

Shareholder Name:

Signature/

Corporate Seal: