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Property and Equipment - Summary of Property Plant and Equipment (Details) - KRW (₩) ₩ in Millions | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
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Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | ₩ 11,338 | ₩ 7,695 | ₩ 6,663 | ₩ 1,498
Right-of- use assets |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | 8,740 | 5,737 | 4,946 | 0
Computer and other equipment |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | 1,455 | 1,380 | 1,057 | 888
Furniture and fixture |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | 380 | 310 | 443 | 484
Construction in progress |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | 0 | 128 | 0 |
Vehicle |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | 6 | 8 | 0 |
Leasehold improvements |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | 757 | 132 | ₩ 217 | ₩ 126
Acquisition price |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | 26,252 | 20,909 |  |
Acquisition price | Right-of- use assets |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | 15,861 | 11,500 |  |
Acquisition price | Computer and other equipment |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | 6,654 | 6,074 |  |
Acquisition price | Furniture and fixture |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | 1,793 | 2,038 |  |
Acquisition price | Construction in progress |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net |  | 128 |  |
Acquisition price | Vehicle |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | 9 | 9 |  |
Acquisition price | Leasehold improvements |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | 1,935 | 1,160 |  |
Accumulated depreciation |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | (14,914) | (13,214) |  |
Accumulated depreciation | Right-of- use assets |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | (7,121) | (5,763) |  |
Accumulated depreciation | Computer and other equipment |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | (5,199) | (4,694) |  |
Accumulated depreciation | Furniture and fixture |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | (1,413) | (1,728) |  |
Accumulated depreciation | Construction in progress |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net |  | 0 |  |
Accumulated depreciation | Vehicle |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | (3) | (1) |  |
Accumulated depreciation | Leasehold improvements |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Property and equipment, net | ₩ (1,178) | ₩ (1,028) |  |

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2021-01-01 -Paragraph 73 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2021-en-r&anchor=para_73_e&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_a&doctype=Standard -URIDate 2021-03-24 + Details
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