Lin Xiaoyu

Biodata

Feature	Information
Name	Lin Xiaoyu (林小雨)
Gender	Female
Affiliation	Jiangnan Martial Arts Academy Family Quarters resident 27
Status	Alive; receiving treatment for a congenital heart-and-lung condition, with recovery expected through continued care 25
First Appearance	Chapter 1

Background

Lin Xiaoyu is Lin Fan's younger sister and his only remaining family after their parents' deaths. The siblings live in Jiangnan City's Slum District, where Lin Fan takes dangerous odd jobs to pay for her treatment. Her congenital heart-and-lung weakness requires continuous medication; going without it for more than three days risks severe relapse, paralysis, or death. 1 2 7

When the Green Wolf Gang threatens their home, Lin Fan carries the underweight Xiaoyu out through the back window and shelters with her in an abandoned workshop. She later stays temporarily at Grandpa Li's courtyard, which is safer from the gang. 7

After Lin Fan sells the Rat King's Demonic Core and Star-Patterned Blue Fluorescent Grass, he buys five Lung Cleansing Pills for Xiaoyu. Her breathing improves immediately, her coughing is reduced, and her stamina begins recovering. 19 Following Lin Fan's academy admission, she receives academy medical coverage; Doctor Bai expects her to recover fully within half a year if she continues treatment and recuperation. 25

Appearance

Xiaoyu is a slight, frail young girl whose appearance initially reflects her long illness and poverty. She is described as around thirteen or fourteen years old, though later identified as fourteen. 1 15

• Pale face and colorless lips during the early stages of her illness 1
• Large, dark, bright eyes 1
• Extremely thin; Lin Fan notes that she weighs less than seventy jin when he carries her 7
• Her complexion becomes rosier and her eyes brighter after taking Lung Cleansing and Blood Condensing Pills 14 19 22

Personality

Xiaoyu is gentle, obedient, and deeply considerate of Lin Fan despite depending on him for care. She repeatedly worries about the cost of her medicine and calls herself a burden, even offering to go without treatment so he can focus on entering the academy. 2 5 11

She has strong faith in her brother and consistently encourages him before his training, entrance examination, and academy assessment. As her condition improves, she begins helping with meals, medicine preparation, sewing, and household tasks rather than remaining idle. 12 14 15

Although physically weak, Xiaoyu wants to become strong enough to protect Lin Fan in return. She is also perceptive: when he returns from Wind Howl Valley with an injury, she recognizes that his bandage is from a knife wound rather than a training accident. 19 22

Health and Treatment

• Congenital heart-and-lung weakness — Causes chronic coughing, chest tightness, fever, and poor stamina; it requires sustained medicinal treatment. 1 7
• Lung Cleansing Pills — Mortal Tier Mid Grade pills used to treat lung damage and congenital lung ailments. One pill stabilizes Xiaoyu's condition for thirty days, reduces coughing by an expected 80%, and restores an expected 30% of her stamina. 19
• Blood Condensing Pills — Old Man Li provides three pills to support her lung condition. After taking them, her complexion regains color and her breathing becomes smoother. 13 14 15
• Academy medical coverage — Granted after Lin Fan's admission; Doctor Bai states that continued medication and recuperation should fully restore her health within half a year. 25

Relationships

• Lin Fan — Her elder brother, protector, provider, and closest family. Xiaoyu trusts his promises to cure her illness and later vows to learn martial arts so she can protect him in return. 1 11 19
• Grandpa Li / Old Man Li — A longtime protector of the siblings who allows Xiaoyu to stay in his courtyard when the Green Wolf Gang threatens them and prepares medicinal soup for her. 7 8
• Lin Dashan and Li Xiuying — Her deceased parents. Xiaoyu keeps their family photographs and her mother's wooden comb as treasured mementos. 7
• Auntie Zhao — Life teacher of the Jiangnan Martial Arts Academy Family Quarters who arranges Xiaoyu's room and promises to watch over her. 27

Story Role / Major Arcs

Slum District illness

Xiaoyu's worsening condition establishes Lin Fan's immediate need for money, strength, and academy admission. Her medicine costs far beyond what ordinary slum labor can provide, making her recovery the central reason for his initial extreme training and Demonic Beast hunting. 1 2 3

Green Wolf Gang displacement

When the gang targets Lin Fan, Xiaoyu becomes vulnerable to retaliation. Lin Fan evacuates her from their shack, places her under Grandpa Li's protection, and resolves to find a safer home. 7

Recovery and academy admission

Lin Fan's earnings finally secure a month's supply of Lung Cleansing Pills, visibly restoring Xiaoyu's health and spirit. She attends the Jiangnan Martial Arts Academy assessment as his supporter, then remains at his bedside while he recovers from his severe assessment injuries. 19 22 23 25

Academy Family Quarters

After Lin Fan enrolls, Xiaoyu is registered in the academy's West District Family Quarters, where she has access to safety, doctors, and regular medicine. 27

Notable Quotes

“Yes, I believe in you, Brother.” 1

“When I get better, I want to learn martial arts too. I'm going to get really strong, and then I'll protect you.” 19

Trivia

• Xiaoyu asks Lin Fan to retrieve their parents' photographs and their mother's broken wooden comb when they flee their home. 7
• She dreams of Lin Fan passing the academy examination in uniform before the assessment takes place. 12
• Her first Lung Cleansing Pill allows her to cook a celebratory meal for Lin Fan with energy he had not seen from her in a long time. 19