Income Taxes - Summary of Provision for Income Taxes (Details) - USD ($)	12 Months Ended
	May 31, 2021	May 31, 2020
Income Tax Disclosure [Abstract]
Current income tax - state	$ 208,999	$ 26,590
Deferred income tax	1,271,591	182,410
Provision for income taxes	$ 1,480,590	$ 209,000