Childhood friend of protagonist and art student at Hudson River Academy. She is the emotional anchor of the main plot and the daughter of Lin Nakamura.

Pale skin, soft features, large ears she hides when flustered, and a slender build. She favors casual art-student clothes and later formal date wear.

Earnest, timid, and self-blaming. She cries easily, apologizes often, and uses art as an escape. Her loyalty is absolute, but her fear of abandonment drives quiet possessiveness.

She was bullied as a child until protagonist defended her, creating their lifelong bond. protagonist confesses to her in her bedroom after the apartment incident. [Core Bond] She regrets not leaving with protagonist years ago and wants to marry him.

A stowaway on the train who becomes a friend, lover, or antagonist depending on protagonist's choice. She is proud, street-smart, and trying to escape her mother.

Toned build, casual streetwear, confident posture, and expressive eyes. She often looks ready to run or fight.

Blunt, guarded, and transactional. She repays debts, hides vulnerability behind sarcasm, and tests whether protagonist sees her as a person or a conquest.

She snuck aboard the train because she could not afford a ticket and needed to escape her mother. protagonist either hides her from the conductor or turns her in. [Core Bond] She remembers protagonist's help as a debt and later offers repayment in her own terms.

A shy barista and college student who meets protagonist at the cafe. She is overworked and inexperienced in romance.

Petite, reserved posture, and simple cafe uniform or casual student clothes. She often avoids eye contact.

Quiet, polite, and earnest. She is afraid of missing out on college life and asks protagonist to teach her about intimacy without a traditional relationship.

She has never approached a boy before because of work and school. She asks protagonist to teach her about sex. [Core Bond] She wants a college experience despite her limited time.

Landlady of protagonist's apartment and Rob's older sister. She raised Rob and carries deep resentment toward absent parents.

Mature build, sharp eyes, practical clothing, and later a cast from a foot injury.

Independent, jaded, and proud. She takes on every problem herself, rejects pity, and hides loneliness behind rudeness.

She raised Rob while their parents were absent and used money to buy forgiveness. protagonist helps her after her broken foot and defends her from Rob's chaos. [Core Bond] She drunkenly kisses protagonist and admits she is tired of being alone.

protagonist's neighbor, a violinist, and a bartender. She lives a dual life as Autumn and Sabrina Kensington.

Short black hair, androgynous styling, and a fit build. She often wears vests, casual clothes, or performance attire.

Cool, observant, and direct. She sees through protagonist's guarded nature and chooses him despite knowing his complicated situation.

Her mother was a ruthless composer, creating a strained relationship. protagonist attends her violin soirée and meets her after the performance. [Core Bond] She asks protagonist if his situation has room for her.

protagonist's next-door neighbor who brings him a housewarming gift. She becomes a maternal or submissive partner depending on choices.

Soft features, gentle smile, and casual homewear. She has a quiet, unassuming presence.

Meek in public, but assertive and hungry for attention in private. She enjoys roleplay and caretaking.

She overheard protagonist's arguments through the thin apartment walls. She brings cookies and offers to be protagonist's Mama. [Core Bond] She wants to be needed and uses roleplay to express hidden desires.

Eldest Nakamura daughter, judo rival, and later protagonist's assistant through Chloe. She is competitive and ambitious.

Athletic build, dark hair, sharp eyes, and either judogi or office wear. She has a strong, controlled presence.

Blunt, aggressive, and jealous. She hides vulnerability behind anger and fears being left behind by those she loves.

She trained in Judo with protagonist and was rejected by a boy she liked. She loses to protagonist in Judo and later works under Chloe. [Core Bond] She loves protagonist and wants to be indispensable to him.