Commitments and contingencies (Details Narrative) - USD ($)	3 Months Ended		6 Months Ended
	Nov. 30, 2022	Nov. 30, 2021	Nov. 30, 2022	Nov. 30, 2021	May 31, 2022
Loss Contingencies [Line Items]
Lease agreement, description			The Company entered into a lease agreement in connection with its office and warehouse facility in California under an operating lease on December 1, 2019 for 3 years. The lease expired on November 30, 2022. On November 9, 2022, the Company entered into a new lease agreement for two years, commencing on December 1, 2022 and expiring on November 30, 2024. The Company has to pay a monthly base rent of $6,098 for the first twelve months and $6,342 for the next twelve months, under the lease agreement.
Lease agreement period	3 years		3 years
Monthly base rent			$ 6,342
Initial lease liability	$ 131,970		131,970
Initial right of use asset	$ 131,970		$ 131,970
Discount rate	12.00%		12.00%
Lease expense	$ 23,559	$ 23,559	$ 47,117	$ 47,117
Lease liability	0		0		$ 47,166
Right of use asset	(0)		(0)		$ 45,453
Accounts Payable [Member]
Loss Contingencies [Line Items]
Claim amount	$ 204,182		$ 204,182