Cover - USD ($)	12 Months Ended
	May 31, 2025	Oct. 17, 2025	Nov. 30, 2024
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Transition Report	false
Document Period End Date	May 31, 2025
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2025
Current Fiscal Year End Date	--05-31
Entity File Number	000-56599
Entity Registrant Name	LAMY
Entity Central Index Key	0001939937
Entity Tax Identification Number	37-2039216
Entity Incorporation, State or Country Code	WY
Entity Address, Address Line One	201 Allen Street
Entity Address, Address Line Two	Unit 10104
Entity Address, City or Town	New York City
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10002
City Area Code	657
Local Phone Number	315-8312
Title of 12(b) Security	Common Stock
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Elected Not To Use the Extended Transition Period	true
Entity Shell Company	false
Entity Public Float			$ 1,289,023
Entity Common Stock, Shares Outstanding		7,777,000
Document Financial Statement Error Correction [Flag]	false
Auditor Name	BOLADALE LAWAL & CO.
Auditor Firm ID	6993
Auditor Location	Lagos, Nigeria