UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16

UNDER
THE SECURITIES EXCHANGE ACT OF 1934

For the month of June 2026

Commission File Number: 001-42877

LEIFRAS Co., Ltd.

(Translation of registrant’s name into English)

Ebisu Garden Place Tower Floor 20
4-20-3, Ebisu, Shibuya-ku
Tokyo, Japan
+81-30-6451-1341

(Address and telephone number, including area code, of Registrant’s principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F ☒

Form 40-F ☐

Explanatory Note

LEIFRAS Co., Ltd. (the “Company”) is furnishing its unaudited financial statements and notes for the three months ended March 31, 2026. The financial statements and notes are attached as Exhibit 99.1 to this report. Management’s Discussion and Analysis of Financial Condition and Results of Operations for the three months ended March 31, 2026 is attached as Exhibit 99.2 to this report. The Company also hereby furnishes its investor presentation and press release, attached as Exhibit 99.3 and Exhibit 99.4 to this report, respectively.

Exhibit Index

Exhibit No.		Description
99.1		Unaudited Interim Condensed Consolidated Financial Statements and Notes of LEIFRAS Co., Ltd. For the three Months Ended March 31, 2025 and 2026
99.2		Management’s Discussion and Analysis of Financial Condition and Results of Operations
99.3		Investor Presentation, dated June [18], 2026
99.4		Press Release, dated June [18], 2026
101. INS		Inline XBRL Instance Document
101.SCH		Inline XBRL Taxonomy Extension Schema Document
101.CAL		Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF		Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB		Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE		Inline XBRL Taxonomy Extension Presentation Linkbase Document
104		Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.