Previously, old friends Shin Min Ah and Lee Byung Hun reconcile at the beautiful heart of Jeju Island after so many years.

In "Our Blues" episode 10, Lee Byung Hun accompanies Shin Min Ah as she goes back to Seoul, facing the biggest life-changing battle in her life.

'Our Blues' Episode 10: Old Friends Min Seon Ah, Lee Dong Seok Reunite

After their sour separation in the past, Min Seon Ah (Shin Min Ah) and Lee Dong Seok (Lee Byung Hun) reunited after talking things through.

The two old friends set aside their grudge against each other, and tried to understand their pain, worries and dreams.

Both wounded, Min Seon Ah and Lee Dong Seok find refuge in each other, just like when they were younger.

Min Seon Ah Returns To Seoul

Although Min Seon Ah was prohibited to visit her son, she insisted on going back to Seoul to see him on his special day.

Worried, Lee Dong Seok accompanied her and made sure she's free from any danger.

READ MORE: 'Our Blues' Episode 9: Shin Min Ah, Lee Byung Hun Reminisce Their Painful Past

Min Seon Ah prepared a lot of gifts for her son, including a tour at the aquarium. The mother and son duo enjoyed their spontaneous trip, as they both miss one another.

However, Min Seon Ah's husband wasn't amused with her return, and even that he'll sue her if she comes to see their son once more.

The Life-Changing Trial

Because of her severe depression, Min Seon Ah couldn't function properly as an adult. She easily forgets things and oftentimes loses track of her time, failing her to accomplish simple tasks.

After their divorce, the two fought one on one for their child's custody, which is in favor of her ex-husband.

The judges strongly think that Min Seon Ah is not adequate to mother her child due to her severe mental illness.

"Our Blues" episode 10 takes a much emotional turn as Min Seon Ah loses the custody battle against her ex-husband.

Lee Dong Seok Brings Heartwarming Comfort

In the previous episodes, Lee Dong Seok is depicted as a man who has some attitude problems and anger issues due to his upbringing.

But when he's with Min Seon Ah, his childhood friend and first love, he becomes softer and more gentle.

When he learns about Min Seon Ah's pain, he tries very hard to comfort her in his own little way. So when she decided to return to Seoul, he insisted on coming with her.

Lee Dong Seok is a breath of fresh air for Min Seon Ah, whose life is clouded by sorrow.

At the end of the episode, Lee Dong Seok holds Min Seon Ah's hand as they walk together, bringing comfort and assurance that she's never alone in the world.

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Written by Elijah Mully.