Surviving in chapter 3 of the manhwa as a player requires a combination of things. First, know your character's strengths and weaknesses. Second, use the environment to your advantage. And third, don't act rashly; think before making any big moves.
Perhaps the story explores how the player's sleepiness is either a hindrance or a hidden strength. Maybe it's tied to a curse or a supernatural phenomenon that affects their life and the plot of the manhwa.
It's a story that explores the complex relationship between the characters who insist they aren't dating despite the signs suggesting otherwise. There's a lot of drama and romance.