[Both leads are devoted only to each other and equally powerful, secret crush, yandere, satisfying and angst-free, silly and lighthearted, sweet on the outside and dark within, protective younger brother]
Leng Yuanxi was in hibernation when a static-like sound in her mind woke her.
“System binding successful. Host: Leng Yuanxi. Identity unknown. Strength unknown. This is the Invincible Universe 666 System. Main quest: help the male lead find his divine power.”
“Sounds interesting. I'm in.”
“Welcome, my supreme, peerlessly charming, absolutely breathtaking, dazzlingly beautiful older sister, here to save her weak, helpless, useless little brother!” Amid bodies strewn everywhere, rivers of blood, and flashing blades and spears, came a sincere prostration and a hysterical cry.
“Sis… Grandma… Grandpa?” How had my wonderful older sister turned into a white-haired old man? Where was my sister?
“Come on, give Grandpa a smile.” Leng Yuanxi's aged, withered hand lifted Mo Zhanling's chin, her eyes sizing up this so-called “mission target.”
“Grandpa, I'm cold.”
“Grandpa, I don't understand this cultivation technique.”
“Grandpa, someone's bullying me.”
“Grandpa, I'm afraid of heights. Can I hold your hand?”
…
“Liuzi, are you sure this is the righteous beacon who died for all living beings? Are you sure there's nothing wrong with him? He likes Grandpa? Is it because I've never been a grandpa and don't understand, or is he…?”
“To meet you again is my honor. That dream must have been Heaven's way of taking pity on me.”