Genres: Comedy, Romance, School
Mashiro Shiina (椎名 ましろ Shiina Mashiro) is the main female protagonist of the story and resides in Room 202 of the Sakura Dormitory. Mashiro is a world famous artist who transferred into Suiko as a second-year to learn how to draw manga. Although her artworks are widely admired by the world in spite of her young age, she knows little to nothing other than drawing and is extremely reliant on others just to get by, lacking even the most basic common sense. As a result, Sorata is forced to constantly take care of Mashiro, to the point that he has to practically dress her, or she will go without clothing.
Sorata Kanda (神田 空太 Kanda Sorata?) is the male protagonist of the story. He is a second-year student of Suiko University of Arts, who lives in room 101 of the Sakurasou Dormitory. He was kicked out of the standard school dorm after he refused to abandon a white cat he picked up. As many of the Sakurasou Dormitory residents have outstanding grades and art skills, he often feels plain and normal among them. He is chosen by Chihiro to take care of Mashiro's daily life and although he initially resists, he eventually grows accustomed, even somewhat fond of the job.
Sorata used to play soccer in elementary and junior high, but he quit because he lost his passion for it.
Ryuunosuke Akasaka (赤坂 龍之介 Akasaka Ryūnosuke) is the resident of room 102. Ryuunosuke is a second-year student of Suiko. He is a recluse who rarely leaves his room, and usually communicates with others with cellphone messages or e-mails. To reduce the need to communicate with others, he programmed an AI program, "Maid". As an expert with computers and programming, he contributes lots of useful advice and information to Sorata for the latter's computer game. According to Ryuunosuke, his ultimate goal is to make Maid become a real human.
He has gynophobia, and will even pass out when girls touch him, which becomes worse after Rita falls in love with him and kisses him on the side of the lips, which becomes his (and consequently Rita's) first kiss.
Nanami Aoyama (青山 七海 Aoyama Nanami) is one of the main characters of the series.
She is also Sorata's classmate. Although she is harsh to Sorata, she obviously is in love with him, and everyone aside from Sorata has noticed this, due to the fact that Sorata is oblivious to her feelings towards him. She escaped from her home to become a voice actress, and has to live on her own.
After she finds herself low on and earns the latter's admiration. Sorata's mother even tells him that she prefer Nanami to be her daughter-in-law.
In the sixth novel, after she fails the voice actor election for the second time, and she decides to reunite with her parents to decide her next step.
Misaki (上井草 美咲 Kamiigusa Misaki) is the former resident of room 201. Misaki is a third-year-student of Suiko who later attends Suimei University of the Arts. She is very good at drawing, but the school decided to send her to Sakurasou Dormitory because she pays too much attention on drawing anime and manga. She creates animations and can handle most of the work herself.
She has feelings for Jin, and acts very open to express her feelings, but Jin turns a blind eye to this and dates many other girls, which can make her very depressed. Sooner or later, she gets married to Jin; making her new name, Mitaka Misaki. She moves into a house next to the Sakurasou Dormitory after her graduation fulfilling her dream as becoming a house wife.
Rita (リタ エインワーズ Rita Ainsworth) was Mashiro's roommate and handler when Mashiro was in England. She was jealous of Mashiro's art talent, and so advised Mashiro to draw manga, but she later regrets this after finding that Mashiro made a big hit on her manga, and comes to Japan to bring Mashiro back to England. After realizing Mashiro's determination, she gives up and returns to England with Mashiro's father and resumes to study art. She usually argues with Ryuunosuke.
She falls in love with Ryuunosuke and kisses him near the lips when leaving Japan, which makes him pass out. The second time Rita kissed Ryuunosuke was in Episode 24, though Ryuunosuke was more cautious. While Ryuunosuke is cold to her and keeps letting Maid handle her email, this only increases her determination and makes her constantly argue with Maid over the Internet. In the fifth novel, she visits Japan again to give Ryuunosuke Valentine's Day chocolate, and catches a chance to kiss him on the lips this time, which makes him pass out again.
Jin (三鷹 仁 Mitaka Jin) is the former resident of room 103. Jin is a third-year student of Suiko. He is Misaki's childhood friend and a playboy. He has dated several girls, including Misaki's elder sister, but in the end he breaks up with all of them.
He finally becomes a couple with Misaki during the fifth novel. He wants to become a playwright, and later attends a university in Osaka to achieve his goal. To pacify Misaki, he gives her a marriage registration form with his signature as a warranty, but Misaki ends up turning it in after his departure on the same day, which makes them officially married.
His residence in Osaka was revealed in Episode 24 to be in Utage-rin, Osaka Prefecture. This is a fictitious location.
Chihiro Sengoku (千石 千尋 Sengoku Chihiro?) is the 29-year old (+15 months) dorm teacher of Sakura Dormitory and an art teacher of Suiko. Despite being a teacher, Chihiro is lazy and only cares about drinking alcohol and trying to date men. Despite being a teacher, she often gives Sorata improper advice. She is Mashiro's cousin and is the one who arranges the transfer, but she forces Sorata to take care of Mashiro due to her laziness. She was a conscientious student of Suiko, and wanted to become a professional artist, but she changed and became an art teacher because of Kazuki Fujisawa wanting to be a game designer.