A Self-Insert in Solo Leveling: A Lifelong Bond

Wen Shuning has absolutely no idea what's going on! She was just following the manhua-and-anime series Solo Leveling when she transmigrated into its world! Fine, she transmigrated, but she also became an insignificant nobody! Fine, she's a nobody! But the real problem is that she triggered a System! It wants her to accompany the protagonist as he grows and help him complete missions! Accompanying him means entering a dungeon where people are killed without a second thought! She says, "I'm just an ordinary person! I just want to live a peaceful life!"