I've got a roundabout idea for jisung as well, he's a bit on the quiet side, big heart and tends to wear it on his sleeve, a little quirky at times, can be temperamental but does his best not to be so moody. Depending on what you decide as fast as what sort of creative he is, jisung could be a bit of a fan maybe? see him in the shop writing or whatever and he's nosey enough to try and investigate. could end up somehow with him as a worker in the shop as well, since he'd be all about trying to help whatever creative outlet he gets into.