Character Relationship Map: Reply 1997

Characters

• Sung Shi-won (played by Jung Eun-ji) — protagonist

  Central figure in Reply 1997, navigating youth and adulthood.

• Yoon Yoon-jae (played by Seo In-guk) — protagonist

  High school student in 1997 Busan, part of friend group.

• Do Hak-chan (played by Eun Ji-won) — supporting

  Character in Reply 1997.

• Kang Joon-hee (played by Lee Ho-won) — supporting

  Character in Reply 1997.

• Mo Yoo-jung (played by Shin So-yul) — supporting

  Character in Reply 1997.

• Bang Sung-jae (played by Lee Si-eon) — supporting

  Character in Reply 1997.

• Sung Dong-il (played by Sung Dong-il) — minor

  Character in Reply 1997.

• Lee Il-hwa (played by Lee Il-hwa) — minor

  Character in Reply 1997.

• Yoon Tae-woong (played by Song Jong-ho) — minor

  Character in Reply 1997.

Story Dynamics

Alliances, conflicts, and narrative interactions that evolve throughout the story.

• Sung Shi-won → Bang Sung-jae (social)

  Friends in Reply 1997 ensemble

• Sung Shi-won → Mo Yoo-jung (social)

  Friends in Reply 1997 ensemble

• Sung Shi-won → Kang Joon-hee (social)

  Friends in Reply 1997 ensemble

• Sung Shi-won → Do Hak-chan (social)

  Friends in Reply 1997 ensemble

• Sung Shi-won → Yoon Yoon-jae (social)

  Friends navigating youth and adulthood together

• Mo Yoo-jung → Bang Sung-jae (social)

  Friends in Reply 1997 ensemble

• Kang Joon-hee → Bang Sung-jae (social)

  Friends in Reply 1997 ensemble

• Kang Joon-hee → Mo Yoo-jung (social)

  Friends in Reply 1997 ensemble

• Do Hak-chan → Bang Sung-jae (social)

  Friends in Reply 1997 ensemble

• Do Hak-chan → Mo Yoo-jung (social)

  Friends in Reply 1997 ensemble

• Do Hak-chan → Kang Joon-hee (social)

  Friends in Reply 1997 ensemble

• Yoon Yoon-jae → Bang Sung-jae (social)

  Friends in Reply 1997 ensemble

• Yoon Yoon-jae → Mo Yoo-jung (social)

  Friends in Reply 1997 ensemble

• Yoon Yoon-jae → Kang Joon-hee (social)

  Friends in Reply 1997 ensemble

• Yoon Yoon-jae → Do Hak-chan (social)

  Friends in Reply 1997 ensemble

Story Analysis

The single-season narrative moves from nostalgic teenage fandom through illness, separation, delayed confession, and adult resolution.

Plot Progression

1. Season 1: Youth And Fandom — The reunited friends revisit the intensity of adolescence in 1997. Idol worship, embarrassment, and playful conflict establish the emotional world of the group.
2. Season 1: Pressure And Illness — Romantic feelings begin to surface while injury and serious illness challenge the characters' ordinary routines. Fan devotion becomes both comic excess and a source of genuine pain.
3. Season 1: Futures Divide — The entrance examinations mark a transition from school life to uncertain adulthood. Career ambitions, romantic expectations, and misunderstandings make separation feel increasingly real.
4. Season 1: Confessions And Farewells — Hidden identities and concealed feelings are gradually exposed. The friends face danger, family pressures, and the approaching departure from their hometown.
5. Season 1: Loss And Resolution — A bereavement creates an urgent awareness that affection must be expressed before opportunities disappear. Delayed romantic choices eventually lead to marriage and a reflective reunion.