Is Unknown coming back?

Wei Qian has been the breadwinner of his family since he lost his parents at a young age. Besides providing for his biological little sister, Wei Li Li, he has also adopted Wei Zhi Yuan as his little brother. Wei Qian puts his life at risk and works illegally to support his siblings. Luckily, his childhood buddy, San Pang, gets him back on the right path. As life gradually falls into place, Xiao Yuan admits that he likes Wei Qian and forcibly kisses him. Overwhelmed with anger, Wei Qian sends Xiao Yuan abroad. Yet, Wei Qian feels as if something is missing. Both of them, who are not related by blood, are no more than brothers? Or will they cross that forbidden line and end up becoming lovers?