Mystery Research Society

Ling Yu, who fell in love at first sight with the young girl Mu Rong Shui Jing, risked his life to get closer to her. He finally passed the assessment of the "Mysterious Research Society" and became a member of this enigmatic organization

Recently, a series of murders involving members of society have occurred, with their causes of death being extremely bizarre. The corpses show no external injuries, yet their hearts are missing, replaced instead by a playing card featuring a red heart A.

Various signs indicate that the perpetrator's actions are aimed at obtaining an ancient parchment. What kind of secrets are hidden within this parchment?

Let us see how the high school student Ling Yu, who cannot become a great hero, gradually embarks on the path of a "detective"