I slowly chewed the whole wheat bread. "Then she should eat more."
*Slap!* A stinging blow landed on my face. Grandma's hand trembled. "Ungrateful wolf! You've always been jealous of Shunshun since you were little..."
I licked the blood from the corner of my mouth. "Grandma, do you remember my tenth birthday?"
She froze.
"Sister said she'd bring me the cake, but she accidentally fell." I stared straight into her clouded eyes. "You said back then, 'At least it wasn't Shunshun who fell.'"
Grandma took half a step back. "You... why would you remember that..."
"It's nothing." I wiped my mouth and stood up. "I'm going to school."
In the hallway, my classmates' gazes toward me had changed. Zheng Kai avoided me from afar, and several girls pointed and whispered.
Until Mo Wen came running and grabbed my arm. "Your sister's in the infirmary!"
In the infirmary, Zhen Shunshun lay on a hospital bed receiving an IV drip, Mom weeping beside her. The school nurse frowned when she saw me. "What are *you* doing here?"
"I asked her to come," Zhen Shunshun said weakly. "I want to talk to my sister alone."
Once everyone had left, her expression instantly hardened. "How did you *do* it?"
She yanked open the collar of her hospital gown, her collarbones jutting out sharply, as if threatening to pierce through her skin. "I've tried everything! Binging, purging, pills... even blood transfusions to gain weight!"
I stood at a safe distance. "Admit it. What system are you bound to?"
Her pupils constricted violently. "You *really* know?" "Know what?" I continued playing dumb.
"That voice..." she muttered distractedly. "The one that said it could let me keep my perfect figure forever..."
My heart raced—she'd finally said it.
"It asked if I wanted to bind with the Fat Transfer System..."
Zhen Shunshun's eyes lost focus. "Said as long as I agreed, all the calories I ate would be transferred... transferred to..."
"Transferred to your twin sister." I finished calmly.
She jerked her head up, eyes wide with terror. "How did you…"
Just then, the door opened. Mom walked in. "Shunshun, the ambulance is here. They're taking you to the hospital for a full check-up." Zhen Shunshun grabbed her mother's hand. "Mom! Zhen Yuanyuan... she... she cursed me!"
Mom shook her head wearily. "Stop it."
"It's true! She stole my weight! She—"
"Enough!" Mom raised her voice. "The doctor said you're severely malnourished, and they found esophageal damage from induced vomiting! You're doing this to yourself!"
Zhen Shunshun was still screaming as they carried her onto the ambulance: "She's going to kill me! Mom! Save me!"
After school, I went to the hospital to visit Zhen Shunshun. She was asleep. Mom was sitting on a bench in the hallway, sobbing brokenly.
"The doctor says she's only 37kg now (approx. 81.6 lbs)…" Mom clutched my hand. "What's happening to her?"
I was silent for a moment. "Maybe it's karma?"
Mom stiffened. "What do you know?"
"I know everything my sister did to me all those years," I said softly. "I know how she enjoyed seeing me ridiculed. I know how she made you all dislike me…"
Mom's hand slowly loosened its grip. "I... I didn't mean to... You're both my daughters..."
"But she needs you now," I took a step back. "And me? I've learned to need no one."
Back home, I updated my social media:
"Day 100. Down 16.5kg (36.4 lbs). Some people are starting to face the fruit of their own evil deeds."
The post was accompanied by a picture of a sprout breaking through the soil, with an overturned glass in the background.
Late at night, the phone jolted me awake. It was the hospital—Zhen Shunshun was missing.
3:17 a.m. The hospital's call shattered the household's sleep.
"Family of Zhen Shunshun? The patient has escaped from the hospital!" Mom's frantic clothes-changing sounds came through the wall.
I lay still in bed, listening to the chaos and panic unfolding outside.