Also in Year 1, Class 3, Setsuna is a member of the class committee and is childhood friends with Sekai. Their mothers are good friends and they work together at the same company. Setsuna is constantly worried about Sekai and tries to make sure that Makoto will keep Sekai happy. This leads her to go so far as to try to eradicate Kotonoha from Makoto's love life by cutting short any interactions they had while she was around, although this was only done for Sekai's sake and she didn't harbor real ill feelings towards Kotonoha herself. Although silent-looking and almost emotionless, she is conscious about her underdeveloped body, especially in comparison with Kotonoha and Sekai. (Source: Wikipedia)
Masakazu is 2-D's class representative who sees class 2-C as rivals. Despite his obvious self-confidence, his character leads him to rejections from his classmates. Some people around him usually refer to him with an alternate nickname "Macaroni," probably because he likes to put Italian words in his sentences. He has a tendency to burst into extremely long inspirational speeches either involving "facing challenges head on" or "how to be manly." As the series progressed, his self-confidence and passion for facing challenges "head on" have become so extreme that his actions and ideas often border on sheer-stupidity and often contain a startling lack of regard for the safety and well-being of others, like when he said that they should just charge the ocean liner the students (including himself) were in straight into a giant reef instead of going around it because it was "the manly thing to do." His appearance is often followed by the U.S. national anthem, because he also has the tendency to (subtly) refer to himself as an American, or at the very least, hint that he has lived in the U.S. when he was younger. He is a skilled sportsman and martial artist, similar to his main rival Hanai in that he takes such things very seriously. (Source: Wikipedia)
Kotonoha's younger sister. Unlike her shy older sister, she is very talkative, full of curiosity, and likes to tease Kotonoha around, but she actually worries about Kotonoha a lot. She often wants to play with Makoto during his visits at her house. Her first name means "heart" in Japanese. *Wikipedia
Under the guise of a yearbook photographer, he takes pictures of the female students for sale for the male population of the school. His ability to seek and gather data earned him the approval of Nishimoto in the "Three Gratitudes of the Video." His nickname is a parody to Romance of the Three Kingdoms. Fuyuki is a talented drummer and is thus a member of Class 2-C's Band. Takano Akira: According to Fuyuki's trading card his weak point is Takano Akira, his rival. However, to date there has been no substantial indication in the story that Fuyuki and Akira are rivals. In fact, the two were on the same Kibasen team during the Sports Festival, and Fuyuki provided film and CG work for 2-C's play, which Akira wrote and directed.
Blood type: B Also in year 1, class 3, she is Makoto's classmate. Sitting next to him in class, she sees the picture that Makoto has secretly taken of Kotonoha on his mobile phone. She then helps him get close to Kotonoha despite harboring strong feelings for him. Even though she is good-natured her emotions overwhelm her in many situations. She lives with her mother in an apartment. Known to be both a cheerful mood-maker and somewhat of a loudmouth. Her cute appearance and bright personality (as admired by Taisuke) attract a lot of secret fans, but with her frank and outspoken personality, all the boys who've confessed to her so far have been mercilessly rejected. In the last episode, She kills Makoto in a fit of rage after she finds out he has been cheating on her without any sort of guilt or remorse. Afterward, she feels regret toward what she had done. Later on, she is invited by Kotonoha to go to the top of the school where Sekai tells Kotonoha that she is pregnant and it is revealed that Kotonoha had decapitated Makoto's corpse and was carrying his head in a duffel bag. Horrified, Sekai comes to the realization that Kotonoha was driven insane. Kotonoha asks Sekai if she can check if the latter is pregnant wherein she brandishes a hacksaw. Sekai attempts to defend herself with the same knife she used to kill Makoto, but is disarmed and fatally slashed across the neck. Kotonoha then proceeds to slice open her abdomen to check if she was indeed pregnant (apparently, she was not). This is the last time Sekai appears in the anime. Manga spoiler: At the end of the manga, Sekai stabbed Kotonoha, but the situation isn't shown. Kokoro mentioned that Kotonoha is bleeding a lot while talking to Makoto on the phone, Sekai overheard the conversation and with a smirk she confessed to her crimes to Makoto that after Kotonoha's attempt to murder Sekai, she isn't worthy enough to be Makoto's girlfriend.
She has two different hairstyles—one with her hair down, in the survival game, and the other with her hair in a ponytail. She can be identified in long hair form by using the fact that her hair is very level. In the Survival Game, she was in the Cafe Faction and was in charge of communications of the team. She reveals that she is skillful with computers, but lacking on the athletic strength. During the Survival Game, she was invited on a date by Tanaka. Having said okay, it is assumed that they have become 2-C's second official couple. According to leads from the manga, the couple may aim to graduate and gain entrance to same university.
Tawaraya Satsuki is known to have a crush on Asou Hiroyoshi, and enjoys and excels at basketball despite her height. She is a very determined player when it comes to sports and tends to be a fierce competitor in general. Working with Sagano, she recruits enough friends to form a girl's basketball team, which she helps to coach, and is one of the players who remains on the team after the basketball arc ends. She makes her first appearance in the anime in Episode 8 of season 2.