Quarterly report pursuant to Section 13 or 15(d)

NOTES PAYABLE (Details 7)

v3.21.2
NOTES PAYABLE (Details 7) - Valuation Technique Binomial Monte-Carlo Cliquet Option Pricing Model [Member]
Jun. 30, 2021
$ / shares
Jun. 30, 2021
₩ / shares
Feb. 09, 2021
$ / shares
Dec. 31, 2020
$ / shares
Dec. 31, 2020
₩ / shares
Debt Instrument [Line Items]          
Stock price | (per share)   ₩ 4,580   $ 1.23 ₩ 6,060
Conversion price       $ 2.00  
Convertible Promissory Notes [Member]          
Debt Instrument [Line Items]          
Stock price $ 1.42   $ 1.41    
Conversion price $ 1.48   $ 1.48    
Selected Yield [Member]          
Debt Instrument [Line Items]          
Selected yield       10.48 10.48
Selected Yield [Member] | Convertible Promissory Notes [Member]          
Debt Instrument [Line Items]          
Selected yield 19.69 19.69 20.29    
Expected Volatility [Member]          
Debt Instrument [Line Items]          
Selected yield       95 95
Expected Volatility [Member] | Convertible Promissory Notes [Member]          
Debt Instrument [Line Items]          
Selected yield 50 50 50    
Time Until Maturity [Member] | Convertible Promissory Notes [Member]          
Debt Instrument [Line Items]          
Expected life (in years) 2 years 7 months 28 days 2 years 7 months 28 days 3 years    
Risk-Free Rate [Member] | Convertible Promissory Notes [Member]          
Debt Instrument [Line Items]          
Selected yield 0.39 0.39 0.30