Jeon Tae-su (pic), younger brother of popular Korean actress Ha Ji-won (original name Jeon Hae-rim), has followed her sister’s footsteps in acting business.

Jeon Tae-su is making his debut with TV drama “Wonderful Days of Love” (unconfirmed, my direct translation) which will start showing on April 23 at SBS channel. Tae-su is starring alongside Lee Ji-hyun in the melodrama.
Ha Ji-won and Jeon Tae-su could become another high profile sister-brother pairing in Korean entertainment, after the success of Kim Tae-hee and her younger brother Lee Wan.
[Source]