Employee benefits (Tables)

12 Months Ended

Dec. 31, 2025

Notes and other explanatory information [abstract]

Schedule of employee benefits liability recognized

		December 31, 2025		December 31, 2024
		(In thousands of Korean won)
Net defined benefit liability	₩		1,257,693		559,270

Schedule of reconciliation from the opening balances

		Defined benefit obligation									Fair value of plan assets						Net defined benefit liabilities
		2025			2024			2023			2025		2024		2023		2025			2024			2023
	(In thousands of Korean won)
Balance at 1 January	₩		559,271			706,102			928,148			-		-		-		559,271			706,102			928,148
Included in profit or loss
Current service cost			457,795			375,158			514,505			-		-		-		457,795			375,158			514,505
Past service credit			292,523			19,015			31,375			-		-		-		292,523			19,015			31,375
Gains on Settlement			1,132			-			-			-		-		-		1,132			-			-
Interest expense			46,760			-			-			9,126		-		-		37,634			-			-
Subtotal			798,210			394,173			545,880			9,126		-		-		789,084			394,173			545,880
Included in OCI
Remeasurement loss(gain)
Demographic assumption			-			(4,954	)		-			-		-		-		-			(4,954	)		-
Financial assumption			(47,762	)		41,683			49,584			-		-		-		(47,762	)		41,683			49,584
Adjustment based on experience			(261,251	)		(80,813	)		(159,142	)		-		-		-		(261,251	)		(80,813	)		(159,142	)
Return on plan assets excluding interest income			-			-			-			1,407		-		-		(1,407	)		-			-
Subtotal			(309,013	)		(44,084	)		(109,558	)		1,407		-		-		(310,420	)		(44,084	)		(109,558	)
Other
Changes in scope of consolidation			931,378			-			-			395,353		-		-		536,025			-			-
Benefits paid			(316,267	)		(496,920	)		(658,368	)		-		-		-		(316,267	)		(496,920	)		(658,368	)
Subtotal			615,111			(496,920	)		(658,368	)		395,353		-		-		219,758			(496,920	)		(658,368	)
Balance at 31 December	₩		1,663,579			559,271			706,102			405,886		-		-		1,257,693			559,271			706,102

Schedule of plan assets

		December 31, 2025		December 31, 2024
		(In thousands of Korean won)
Cash	₩		53		-
Time deposits			405,833		-
Total	₩		405,886		-

Schedule of assumptions

	2025	2024			2023
Discount rate	3.7% ~ 4.6%		4.2	%		4.9	%
Future salary growth	6.28% ~ 7.1%		7.1	%		7.24	%

Schedule of defined benefit obligation

		December 31, 2025						December 31, 2024
		Increased by 1%			Decreased by 1%			Increased by 1%			Decreased by 1%
		(In thousands of Korean won)
Discount rate	₩		(119,694	)		138,208			(55,066	)		66,463
Future salary growth			137,766			(121,689	)		66,204			(55,864	)

Schedule of employee benefit expenses recognized

		Year ended December 31, 2025			Year ended December 31, 2024			Year ended December 31, 2023
		(In thousands of Korean won)
Wages and salaries	₩		11,854,114			8,056,765			9,641,567
Expenses related to post-employment plans			1,382,647			689,253			981,019
Social security contributions			351,143			398,066			582,545
Fringe benefit			860,744			585,245			598,503
Cash settled Share-based payments			(18,676	)		(180,127	)		(25,758	)
Total	₩		14,429,972			9,549,202			11,777,876

Schedule of Expenses are recognized in the consolidated statements of comprehensive income

		Year ended December 31, 2025		Year ended December 31, 2024		Year ended December 31, 2023
		(In thousands of Korean won)
Cost of revenues	₩		7,341,369		7,280,355		9,290,041
Selling, general and administrative expenses			7,088,603		2,268,847		2,487,835
Total	₩		14,429,972		9,549,202		11,777,876