Watashitachi no Tamura-kun

Watashitachi no Tamura-kun's main story revolves around the title character Yukisada Tamura, who is in his third year of junior-high school when the story begins. Yukisada becomes captivated by a strange and beautiful girl named Komaki Matsuzawa, who says that she was born on another planet and that she is trying to go back.[1] Eventually, Yukisada confesses his feelings for Komaki to her, but before matters can progress, Komaki's grandmother dies and she has to move away. They keep in contact for a while by writing letters, but Komaki stops writing around the time high school entrance exams roll around and they lose contact. On entering high school Yukisada becomes concerned about one of his female classmates named Hiroka Sōma.[1] Hiroka was bullied in junior-high, and stayed home from school to avoid her tormenters. This led to her becoming isolated and helpless. Yukisada chooses not to ignore her, unlike most of his other classmates, and instead starts encouraging her and helps her to build her self-esteem. Before long, Hiroka falls for Yukisada, and confesses her love to him. During this time, Yukisada's best friend, Takakura, has kept in contact with Komaki and has mentioned Hiroka in their communications. Then, one day, Yukisada receives a letter from Komaki asking about Hiroka. This puts Yukisada on the horns of a dilemma where he has to choose between his old love, Komaki, and his new love, Hiroka.

The two-chapter side story titled Takaura-sanchi no Kazokukeikaku (高浦さんちの家族計画) concerns Yukisada Tamura's good friend, Shinichi Takaura and his younger half-sister, Io Tamai. Io detests anything related to matters of love or affection and is very anti-social. Seeing this, Shinichi attempts to rehabilitate his half-sister in the matter of love.

Yukisada Tamura (田村 雪貞, Tamura Yukisada)

Voiced by: Sōichirō Hoshi

Yukisada is the protagonist of the story. Yukisada lives in a five-person household with his two parents, and an older and younger brother. Basically, he is a frivolous person who easily gets carried away. His favorite meals are eel and home-made jiaozi. At one point, he loved learning about bugs, but has since moved on to the manners and customs during the Kamakura period in Japan.[1] He finds inspiration from Hōjō Tokimune, though his dream is to be someone as great as Emperor Jimmu. The story begins with him in his third year of junior-high school. He falls in love with his classmate and friend Komaki Matsuzawa, and confesses to her one day. However, she moves away almost immediately after due to her grandmother's death. On entering high school he meets another girl, Hiroka Sōma, who eventually confesses to him, setting the stage for the drama to come.

Komaki Matsuzawa (松澤 小巻, Matsuzawa Komaki)

Voiced by: Ryō Hirohashi

Komaki is Yukisada's classmate during their third year of junior-high school. She lost both her parents and her older brother in an accident when she was twelve and was taken in by her grandmother. Due to her loss, she became very quiet and reserved. She is a very strange girl who says that she was born on another planet and wants to go back.[1] She meets Yukisada in her third year of junior-high and little by little opens her heart to him. However, during summer vacation, her grandmother dies and she has to move to live with a distant relative, far away. In school, she always gets top grades, and runs the 200 meter dash on the school track team. Her favorite food is curry.

Hiroka Sōma (相馬 広香, Sōma Hiroka)

Voiced by: Ami Koshimizu

Hiroka is Yukisada's classmate during their first year of high school. While considered to be very beautiful, she acts cold towards others so most people leave her alone;[1] she is given the nickname "Tundra Queen" due to her standoffish personality. During her junior-high school life, she was bullied constantly and even stayed home from school for a year because of it. It turns out that Yukisada's older brother, Nao, tutored her for her high school exams. Some of her classmates from her junior-high still attempt to tease her, though Yukisada does his best to encourage her and help rebuild her self-esteem. Due to this, Hiroka becomes quite attached to Yukisada and one day confesses her love to him; eventually, she shares her first kiss with Yukisada. Hiroka is also very good at cooking.

Hachiya (蜂谷)

Voiced by: Eriko Fujimaki

Hachiya is the school nurse at Yukisada's high school. She encourages Hiroka and advises Hiroka and Yukisada about various things. Her nickname in school is "unripe fruit" (青い果実, Aoikajitsu).

Shinichi Takaura (高浦 真一, Takaura Shinichi)

Voiced by: Atsushi Kisaichi

Shinichi is a good friend of Yukisada's and they have known each other since junior-high school at least, when Shinichi was the class representative of their class. One way or another, he is constantly worrying about his younger half-sister, Io.

Io Tamai (玉井 伊欧, Tamai Io)

Io is Shinichi's half-sister born from Shinichi's father and his mistress. Her mother enjoys trifling with the Takaura family's assets, which makes Io disdain her. Since her familial life is rather complicated, she has gone through different interests from reading books, to researching black magic, and even running a website dedicated to aesthetics. She is extremely disgusted by anything pertaining to love or attraction. She has a pet Shiba Inu named Potato.

Reiko Tamai (玉井 麗子, Tamai Reiko)

Reiko is Io's mother. Since she is Shinichi's father's mistress, she lives in their house. She constantly fights with members of the Takaura family and her daughter but has a surprisingly good relationship with Shinichi as she sees him as a good role model for Io.

Nao Tamura (田村 直, Tamura Nao)

Voiced by: Ryōhei Nakao

Nao is Yukisada's three-years-older brother. He has a sharp mind and spends much of his time at university. He also helps tutor Hiroka with her school work. In short, he is a very dependable older brother. He also constantly concerns himself with matters of Japanese lexicon.

Takayuki Tamura (田村 孝之, Tamura Takayuki)

Takayuki is Yukisada's three-years-younger brother. He enjoys playing sports and is popular with girls. During his sixth year of elementary school, he devotes much of his time to playing soccer.

Ritsuka Kurokawa (黒川 立夏, Kurokawa Ritsuka)

Ritsuka is Komaki's classmate during their first year of high school. Like Komaki, she also has someone she likes and misses due to physical distance between them. She is the main character from the short side story "Himitsu Melancholy".

Yōko Shikata (鹿多 瑤子, Shikata Yōko)

Yōko is the class representative of Yukisada's class during their first year of high school. She also appears in the short side story "Ohige Girls".

• Dengeki Bunko's official website (in Japanese)