What did Suji Kim write?
Suji Kim wrote Under the Oak Tree: The Novel, Volume 3, Under the Oak Tree: The Novel, Volume 2, Under the Oak Tree: The Novel, Volume 4, Under the Oak Tree: The Novel, Volume 1 (verified via Wikidata Q136992647 2026-09-03 17:03 UTC; Wikidata Q136992652 2026-09-06 16:25 UTC; Wikidata Q136992669 2026-09-06 16:25 UTC; Wikidata Q140323505 2026-09-05 20:51 UTC).