The protagonist is a 17-year-old student, Ken Inami, a soccer loving dude who aspires to go to film school. His girlfriend Hotaru Shirakawa also has high aspirations; having played piano ever since she was a child, she aims to go to music school. Ken and Hotaru have been dating for a spell and are at a rocky juncture in their relationship. This is where the game gets interesting. You can either make decisions to salvage Ken's relationship with Hotaru or chase after another girl.
Age: 23. Ken's teacher at Hamasaki High School and his next door neighbor. Tsubame is a mysterious woman who often speaks in philosophical terms and has a cold-hearted personality with a decadent atmosphere about her. She is the instructor of the Summer School at Hamasaki High.
Age: 17. The primary heroine of Memories Off 2nd, Hotaru is in her third year at Hamasaki High School. She often acts childish and immature, and is sometimes an airhead. Her favourite hobby is the piano. Her best friend is Tomoe, and Ken is her boyfriend.
Age: 21. The older sister of Hotaru, Shizuru is in her third year in University. She is especially good at making deserts which Hotaru loves to eat. She has an interest in and is good at professional wrestling. She also has a habit of spoiling and caring about Hotaru, helping her out with her troubles with Ken. She is a kind-hearted person in nature.
In "Omoide ni Kawaru Kimi ~Memories Off~" : Age: 22. Shougo's senior at the university, a fourth-year student of the Literature Department. Shizuru still has a passion for wrestling and is training her techniques on both Koyomi and Shougo.
She also is a secondary character in Memories Off ~Sorekara~, working as the deputy manager at the same restaurant as Isshu.
Age: 17. A second year student at Hamasaki High School, Megumi is a member of the art club and works part-time with Ken and Shin at the Ressac restaurant. She tries to keep herself busy there but her clumsy nature makes it difficult as she accidentally breaks plates on a common basis. Despite this, she tries to keep cheerful even though she's a manic-depressive.
<hidden by spoiler settings>Megumi has a younger twin named Nozomi, who has a weak body, so she spends most of her time in a hospital. Megumi and Nozomi sometimes pretend to be each other and change places with each other.
Age: 17. A third year student at Hamasaki High School, Takano is a member of the swimming club and a classmate of Kens. She was born in Russia and has a kind and affectionate, but blunt nature. She is especially popular amongst underclassmen. However, she has a cold attitude towards men for some reason.
Age: 17. Hotaru's best friend, Tomoe is also in her third year at Hamasaki High School. She works part-time at a local restaurant and is a member of the theatre club. She has an open-hearted and cheerful personality. Her hairstyle slightly resembles Yue Imasaka's from the first Memories Off.
A recurring character in each game in the Memories Off series. As a supporting character, Shin is good at understanding the protagonists, entertaining his surroundings and commenting the events in the story. Usually, Shin is a freeter or a part-time worker. His appearance changes a bit in each game.
Shin owns a dog named Tomoya, which is called after the protagonist of the first game in the Memories Off series. Tomoya (the dog) always hangs around Shin in the games.
His roles in different games:
Memories Off (1st game): Tomoya's best friend and classmate. A self-proclaimed "Free man". <hidden by spoiler settings>Shin had witnessed the car accident in which Ayaka was killed, he regrets that he wasn't able to do anything at that time.
Memories Off 2nd: He works at the same family restaurant as Ken, refers to Ken as Inaken and Hotaru as Tarutaru.
Age: 17. A second year student at Hamasaki High School, and Megumi's younger twin sister. Nozomi has a weak body, so she spends most of her time in a hospital. Like her older sister, Nozomi also belongs to the arts club. Megumi and Nozomi sometimes pretend to be each other and change places with each other.
Age: 16. Shion is a girl who transferred into Tomoya's class in the past semester. She has a calm personality, and prefers to be isolated. Like Kaoru, Shion excels in language, and shows an interest in literature to the extent where she became a librarian.
Age: 20. Koyomi is actually a university student, but commutes to the school in order to substitute her mother as the cashier for the school for a week. She is kind and caring, but is also clumsy when collecting payments. She has two pet hamsters named Ggakdugi and Namul.
In Omoide ni Kawaru Kimi ~Memories Off~: Age: 22. A fourth-year university student at the Economics Department and Shougo's senior; they met for the first time at his welcoming party.