This week on SBS 'My Little Old Boy', the siblings of Kim Seung-soo, Kim Jun-ho, and Heo Kyung-hwan gather for the first time, showcasing unprecedented sibling chemistry that brings great laughter. In particular, attention is drawn to the first-ever revelation of Kim Seung-soo's biological sister, who had been shrouded in mystery.

On this day, Heo Kyung-hwan invited Kim Seung-soo's and Kim Jun-ho's siblings to his home along with his younger sister. The appearance of Kim Seung-soo's biological sister, who had never been disclosed before, captured everyone's attention. The 2-year older sister, who closely resembles Kim Seung-soo, exuded a charismatic aura that overwhelmed everyone upon her arrival. As the eldest, Kim Seung-soo, along with Kim Jun-ho and Heo Kyung-hwan, became captivated by his sister's charismatic presence.

In contrast to the sisters who are already married and have two children each, the sons, who are still single, drew sighs from the studio. To Kim Jun-ho's sister saying, "I’m so happy that my brother married," Heo Kyung-hwan's sister revealed her disappointment, noting, "I really envied Ji-min unnie," causing the studio to burst into laughter. In response, MC Shin Dong-yeop brought up Heo Kyung-hwan, who was once referred to as Ji-min’s romantic interest, and jokingly remarked to Kyung-hwan's mother and Ji-min's mother, "You were almost in-law," introducing them to one another and turning the scene into a sea of laughter.

Meanwhile, Heo Kyung-hwan, who recently met Kim Ji-min, mentioned, "I heard a significant remark from Ji-min," which reportedly left Kim Jun-ho and his sister stunned. What did Kim Ji-min say to provoke the newlywed Kim Jun-ho's anger? This will be revealed through the broadcast.

For a moment, the cheerful atmosphere dissipated as unexpected sibling warfare broke out due to a special gift announcement from Kim Jun-ho’s siblings. They had prepared for the still-unmarried Kim Seung-soo and Heo Kyung-hwan. However, upon hearing that there was only one prospective date, a fierce competition ensued between Seung-soo's sister and Kyung-hwan's sister. The siblings raised their voices to appeal their familial advantages, and this heated atmosphere reportedly gripped the mothers of Seung-soo and Kyung-hwan, who were watching from the studio. It remains to be seen who will emerge victorious in this fierce dating competition.

The sibling gathering of Kim Seung-soo, Kim Jun-ho, and Heo Kyung-hwan, which created a laughter-filled studio with unprecedented sibling chemistry, can be seen on SBS 'My Little Old Boy' this Sunday at 9 p.m.

[Photo] SBS

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