Super Junior has indeed a strong brother relationship as each members show their own way of support for their maknae Kyuhyun, who debuts solo.

Siwon, in particular, teases fans on his by showing off his signed CD. He wrote, "You're jealous right? I've received a signed CD from Kyuhyun oppa^^ #AtGwanghwamun"

The photo attached shows Kyuhyun proudly looking at the camera while showing his signed CD for Siwon while the latter is making a happy face looking at their maknae.

Moreover, Siwon also went to watch Kyuhyun's pre-recording today at KBS Music Bank and cheers on him like the rest of the fans. Meanwhile, Kyuhyun is having his solo debut stage today and will perform his track 'At Gwanghwamun'.