The Promise of the Soul

Synopsis

After a fall swaps his soul into his grandson’s body, a 69-year-old man confronts college, queer romance, and the chaos of first love—all at once.

First Air Date: 2025-06-27

Last Air Date: 2025-09-05

Number of Seasons: 1

Number of Episodes: 12

Created By: Hsu Tzu

Networks: Sanlih E-Television, GagaOOLala

View Technical Specifications on IMDb

Top Cast

Martin Wong as Xia Cha / Xia Ze-fang
Kenji Fan as Ye Hai-yuan
Yaron Qiu as Guan Ri-qing
Hong Wei as Jiang Bai-ling
Li Ting as Chen Qian-sui
Kelly Liao as Haru
Mariko Okubo as Hana
Rachel Chang as Ye Hui-mei
Alexei Huang as Grandpa Xia Cha
Xu Jing-bin as Old Wang

Seasons

Season 1 (2025)

After a fall swaps his soul into his grandson’s body, a 69-year-old man confronts college, queer romance, and the chaos of first love—all at once.

Episodes:

Ep. 1: The Ninth Hurdle in Life (2025-06-27)

After a fall, Xia Cha wakes in his grandson’s body—only to face youth, college, and a first kiss.
Ep. 2: After the Soul Swap, I Became My Grandson (2025-06-27)

Trapped in his grandson’s body, Xia Cha searches for a way back—until his own body is cremated.
Ep. 3: Young People’s World Is Beyond Expectation (2025-07-04)

Posing as his grandson at college, Xia Cha clings to Haiyuan as he fumbles through modern life.
Ep. 4: I Don’t Mind My Own Business. I Mind Yours and Mine (2025-07-11)

To escape Riqing, Xia Cha moves in with Haiyuan—where nightly closeness sparks quiet attraction.
Ep. 5: Student Life All Over Again (2025-07-18)

As Xia Cha adapts to campus life, Haiyuan’s jealousy grows—forcing him to face his true feelings.
Ep. 6: That Sudden Flash of Red (2025-07-25)

A dream reveals a red thread linking Xia Cha and Haiyuan—love tied by fate and past lives.
Ep. 7: What’s Mine Is Mine (2025-08-01)

After injury and a night together, Xia Cha and Haiyuan’s love deepens—until they’re discovered.
Ep. 8: Was That Person Really You? (2025-08-08)

A misunderstanding fuels jealousy and their first fight, testing Xia Cha and Haiyuan’s fragile bond.
Ep. 9: Filming Our Happy Daily Life (2025-08-15)

Working together draws them closer—and when Haiyuan confesses, he suddenly vanishes.
Ep. 10: If I Can’t Get Him, You Won’t Either (2025-08-22)

Haiyuan rescues Xia Cha from Riqing, but fate twists again when the red thread shifts hands.
Ep. 11: If the Red Thread Snaps, a Bond Ends (2025-08-29)

Doubt and heartbreak tear them apart as souls clash and Xia Cha makes a life-changing choice.
Ep. 12: It’s You, Just You, Only You (2025-09-05)

Through sacrifice and reunion, Xia Cha and Haiyuan prove that love transcends bodies and time.