You Force Me to Be a Hero, Right?

After an accident, the system awakened, and time went back. My consciousness traveled back to the deceased supernatural hero "Ling Yun". The system told me: If I want to be reborn, I must find out the truth behind Ling Yun's death and let him live. The system also gave me character cards that can summon super heroes. They have different images and personalities... As long as I play as them and complete tasks and fulfill their wishes, they will become stronger. But the system doesn't seem to take into account: I, He Chen, am just an ordinary high school student! You want me to play the hero? Then all I can say is: "Heroes, your punches back then weren't fast enough, let alone hard enough!"