He'd made a promise to Leia, one that he didn't know if he'd be able to keep, that he would try to bring their son home. A part of him knew it wouldn't be easy, that he'd most likely fail before he even got through the façade that was Kylo Ren. But he had to try. For their son's sake, for Leia's sake, for his sake he would try to get through to him. No one else understood why he was there, none of them understood that the man they'd been running from was their son. He'd failed him in the past, allowed Snoke to poison his mind and Han wasn't about to fail him a second time. But standing there he didn't think he would be able to do more than remind him of his failures. It was only Leia's voice that reminded what he needed to do and why he was willing to risk it all. "You can come home and we can help you. Your mother and I can help you."