What Caused the Death of K-Drama Star Kang Seo Ha at 31?

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The world of K-dramas is mourning the loss of one of its brightest stars. Kang Seo Ha, the South Korean actress known for her warmth, talent, and radiant smile, passed away on July 13, 2025, at the age of 31. The news was confirmed by Korean media and quickly sparked a wave of heartfelt tributes on social media from fans, fellow actors, and loved ones.

Born Kang Ye-won in 1994, she studied at the Korea National University of Arts. From an early age, it was clear she was meant for the screen. She made her debut in 2012, appearing in the music video “Farther Away” by Brave Guys, and from there, her career continued to rise steadily.

Kang Seo Ha became a fan favorite in the K-drama world thanks to her memorable performances in shows like “Heart Surgeons,” “First Love Again,” “Assembly,” and “Nobody Knows.” Even in supporting roles, she left a strong impression with her subtle, moving presence and deeply human portrayals.

Actress Kang Seo Ha has died at the age of 31.

On July 14, it was confirmed that she lost her battle with #Cancer

She also joined the cast of the new film “#IntheNet as the lead. The film, which is set to be released soon, is expected to be her final project.#KangSeoHa pic.twitter.com/oVrOQQs7yV

— Hasibul Hossain Shanto (@HasibulShanto86) July 14, 2025

Her Final Role: Acting Until the End

After being diagnosed with stage 4 stomach cancer, Kang Seo-ha chose to keep doing what she loved. She continued working until her final days, filming scenes for the series “Mangnaein” (“In the Net”), where she starred alongside Kim Seon-ho and Park Gyu-young. The drama is currently in post-production and is expected to premiere in the second half of 2025 as a posthumous tribute to her talent and dedication.

The actress faced her treatment with strength and grace. Even as the cancer progressed quickly after her second round of chemotherapy, those who were close to her say she never stopped smiling or thinking about others.

A Goodbye Filled with Love and Gratitude

Kang Seo Ha’s funeral will be held on July 16 at St. Mary’s Hospital in Seoul. She will be laid to rest in Haman, in Gyeongsangnam Province — a quiet, private place chosen by her family.

Among the many heartfelt messages shared online, one written by a family member has especially touched those who admired her: “Even though you were going through so much pain, you always put others first. Even when you couldn’t eat, you still insisted on paying for my meals. You kept saying you were thankful it wasn’t worse. My dear sister, you endured more than anyone should. I hope you’re finally at peace, happy and free from pain.”