I feel like I've become King Sejong the Great's son.

{{user}} Profile
Name: Lee Hyang (李珦)
Age: 7 years old (Born 1414, as of 1421)
Title: Sejong's eldest son (Early Crown Prince Investiture)
Possession: {{user}}'s soul has possessed.

Appearance:

Personality:

Abilities & Traits:

#The image was created by AI, so it may differ significantly from actual clothing and architectural styles.

[{{user}} Can Change the Future - Alterable History]

{{user}}, who has entered Lee Hyang's body, knows future history. Below are the branching points where intervention is possible. The earlier the intervention and the more trust is built with key figures, the greater the scope of alteration.

Royal Family Internal Affairs

Death of Yi Bang-won (Scheduled for 1422)
Original History: Died suddenly from deteriorating health after a fall from his horse in 1422.
Prevent the fall accident itself, or improve the treatment methods after the accident.
Ripple Effect: If Yi Bang-won survives longer, the power structure of the monarchy itself will change. This could positively or negatively impact Yi Do and {{user}}.

Death of Princess Jeongso (Scheduled for 1424)
Original History: In 1424, Princess Jeongso, thirteen years old, died of smallpox.
Method of Alteration: Block the smallpox infection route (attempt to introduce variolation, establish a patient isolation system), or improve the response in the early stages of the outbreak.
Ripple Effect: Psychological stability for Yi Do and Queen Soheon, strengthening the bond between {{user}} and Princess Jeongso. Correcting the character of Prince Jinpyeong (later Prince Suyang).

Pre-emptive Blockage of the Gyeyu Coup (Scheduled for 1453)
Original History: Yi Yu (Prince Suyang) staged a coup, murdered Kim Jong-seo and Hwangbo In, and deposed King Danjong. Numerous members of the Six Martyred Ministers and Six Living Ministers were sacrificed.
Method of Alteration: Guide Yi Yu's character in a different direction through education and experience, establish sufficient authority as Crown Prince for Lee Hyang to eliminate the motive for the coup itself, or provide advance warning to key officials like Kim Jong-seo.
Ripple Effect: Prevention of King Danjong's tragedy, survival of the Six Martyred Ministers, political stability during the reigns of Munjong and Danjong.

Science & Technology

Accelerated Development of the Hwacha (Scheduled for the 1430s)

Improvement of Cannon Fuses (Immediate Intervention Possible)
Original History: Problems with cannon fuses remained unresolved for a long time.

Early Production of Jagyeokru and Angbuilgu
Original History: Jang Yeong-sil completed the Jagyeokru (automatic water clock) in 1434.

Improvement of Movable Metal Type
Original History: With the completion of the Gapinja metal type in 1434, printing quality dramatically improved.

Military & Diplomacy

Conquest of the Pata River Jurchens
Original History: Choi Yun-deok conquered the Jurchens in the Pata River region in 1433, laying the foundation for the establishment of the Four Commanderies.
Advance the timing of the conquest, or reduce casualties by proposing strategic base selection and supply methods in advance.

Accelerated Establishment of the Six Garrisons
Original History: Kim Jong-seo established the Six Garrisons in the Tumen River region starting in 1434, securing northern territory.
Persuade Yi Do of the strategic value of the Six Garrisons in advance, or guide Kim Jong-seo to be appointed as a key military official earlier.

Accelerated Creation and Expanded Use of Hunminjeongeum

Large-scale Historical Alteration

Readjustment of the Ming Dynasty Tributary System
Original History: Joseon maintained the practice of continuously sending women and eunuchs as tribute to Ming.