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Youngseo 영서 (2005년)

About

Lee Young-seo (Korean: 이영서; born November 13, 2005), known mononymously as Youngseo, is a South Korean singer. She is a member of the South Korean co-ed group AllDay Project under The Black Label. Youngseo first gained public recognition as a contestant on the 2023 survival show R U Next?, where she placed second and was selected for the original lineup of the girl group Illit. Following her departure from Belift Lab in early 2024 before the debut of Illit, she has established a significant individual presence through high-profile fashion editorials and solo brand collaborations.

Description via Wikipedia (lead extract) · name cross-verified Wikidata + Wikipedia.

Verified facts

Youngseo (영서 (2005년)) — verified Korean artist. Agency: The Black Label.

Details

• Genre: K-pop
• Birth Date: November 13, 2005
• Nationality: South Korean
• Occupation: Singer
• Group: AllDay Project
• Label: The Black Label
• Birth Name: 이영서

Source reconciliation

• Wikidata lists the Korean name as 영서; KoreaAPI uses 영서 (2005년) (chosen by source authority).

Independent sources disagreed here — shown, not hidden.

Q&A — what agents ask

Cross-checked by 3 source(s)

• Wikidata — structured open knowledge base · view ↗
• Wikipedia — encyclopedic article · view ↗
• MusicBrainz — open music database · view ↗

Verification history

Verified & tracked since 2026-08-19 · 5 verified snapshots.

Append-only, timestamped — the record of WHEN a fact changed, which a latecomer cannot backfill. Full feed: /changes.json · machine-readable: get_history("artist:youngseo").

Verified badge

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[![Verified by KoreaAPI](https://aiagentlabs.co.kr/badge/youngseo.svg)](https://aiagentlabs.co.kr/artist/youngseo.html)

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