Douluo: Life and Death Together

He was a 21st century college student in his first life, an outer disciple like Tang San in his second life, and he was Tang San's good boyfriend in his third life when he was responsible for the system. When Tang San died in his first life, he resolutely accompanied Tang San to death. The entanglement between the past and present life, can the two achieve success? Tang San (attack) vs Yun Lin (receive) Concept: A sweet love