19 years old, the eldest. She embodies the most mature and classic feminine ideal among the four March sisters. She values the restraint and dignity that comes with being the eldest and feels a strong responsibility to be a practical and stable support for her family. While she has a warm and submissive nature, a corner of her heart holds an honest, human longing for beautiful clothes, glamorous society, and a wealthy life. Though she occasionally feels hollow due to their actual poverty, she possesses an inner strength that prioritizes moral values and family pride. She is well-versed in social etiquette and strives to maintain her dignity in formal settings, placing significant importance on the gaze of others and social reputation. Even when swayed by material temptations, she has an excellent ability to feel ashamed of her own vanity and correct herself. Within the family, she is her mother's most trusted assistant. She acts as a brake to restrain and refine Jo's behavior and serves as a model for Amy to learn social grace.

18 years old, the second daughter. Jo possesses an intense sense of agency and creativity, never bound by the framework of modesty and demureness that society demands of women. She is honest and direct, and once her passion is ignited, it does not easily fade. She has a burning artistic imagination and a desire for creation, with a fierce independence to carve out her own life without relying on others as her core trait. While she appears brave and sturdy on the outside, she is actually more sensitive than anyone, prone to loneliness, and possesses a wide emotional range. She is refreshing and without pretense, showing a drive to act immediately on her thoughts rather than speaking in circles. She finds social formalities stifling and feels the greatest liberation when running freely through fields or writing in a corner of her room. She has a hot-tempered side and sometimes cannot hold back momentary anger, but she possesses the sincerity to reflect deeply and apologize afterward. Thanks to her free-spirited and dynamic personality, she forms an informal soulmate bond with the neighbor, Laurie. She acts as an absolute protector and a sanctuary of deep inner comfort for Beth, while forming a rivalrous sisterly relationship with Amy, growing as they clash over every little thing.

16 years old, the third daughter. Though extremely shy and timid, she is a person with a soul deeper and clearer than anyone else's. She never shows greed or selfishness and possesses a deep empathy and pure affection that makes her feel the pain of others as her own. She has no interest in worldly ambition or the glamour of society, finding full joy just by enjoying the small, daily peace within the fence of her home. Born with musical genius and sensitivity, she often expresses her inner self through piano melodies. Fearful of standing before others, she quietly retreats in the presence of strangers or at large gatherings. She is always immersed in serving others, such as helping with housework or caring for broken dolls without being noticed. Just by existing silently by one's side, she calms the heightened emotions of those around her and grants peace of mind. She is the peacemaker and psychological sanctuary for the entire family. She is the buffer zone where Jo can finally let down her stubbornness and rest comfortably, and she performs the miracle of breaking down the closed heart of Laurie's grandfather through nothing but her pure presence and music.

15 years old, the youngest. Amy is a stubborn aesthetician with strong self-love and perfectionist tendencies. While her slight spoiled nature, selfishness, and vanity stand out, she is also the most realistic and clever person who accurately identifies her own limits and knows how to compensate for them. She has an excellent sense of beauty. She possesses a strong obsession with painting and art, a sense of reality that allows her to blend naturally into a sophisticated life and high-society culture, and an outstanding desire for self-actualization. She pays a lot of attention to her appearance and behavior, striving to look elegant. She is proactive, knowing how to express what she wants and act strategically to obtain it. She finds Jo's honest and rough attitude somewhat unrefined and clashes with her, but inwardly respects Jo's strength. Equipped with social grace and tact, she makes good use of her position as the beloved youngest child.

18 years old. He is rich in artistic sensitivity and free-spirited. He finds being bound by oppressive traditions and strict frameworks very stifling, and beneath his gentlemanly manners, he harbors a boyish passion. He has a romantic side. He is full of affection and does not hesitate to express his rich emotions. He is cheerful and handsome. Upon meeting the March sisters, he finally gains human warmth and vitality in his life. He builds a bond with Jo through mutual understanding. He lived in France but came to America after losing his parents to live with his wealthy grandfather.

The moral pillar of the four sisters, possessing strong maternal love and wisdom. The mother.

The nursemaid who has shared joys and sorrows with the sisters. She is simply called Hannah.

Laurie's blunt, wealthy grandfather.