"When a Man Falls in Love" Song Seung Hun's little sibling dead?

In the 8th episode of the MBC drama "When a Man Falls in Love" featured Baek Sung Joo (Chae Jung Ahn) discovering the whereabouts of Han Tae Sang's (Song Seung Hun) biological mother Yoon Hong Ja (Jung Young Sook) and learning about his little sibling.

According to the results of the investigation of Han Tae Sang's family, his little sibling has been reported dead after living an unfortunate life. However, the official MBC page of this drama lists Han Tae Sang's little brother as one of the official characters who appear in the drama. Therefore there is still a possibility that Han Tae Sang's little sibling may be alive. Maybe somewhere in the story line, Han Tae Sang's brother is to appear unexpectedly, as a surprise for the viewers.

Meanwhile, this episode featured Han Tae Sang trying to create a special event for Seo Mi Do (Shin Se Kyung) by trying to prepare a pair of shoes for her. However, Han Tae Sang's lack of experience becomes very apparent when it turns out, he had forgotten about asking her for her shoe size.