Takeshi has a very honest and straightforward personality. He is very upfront about his rivalry and hatred (at first) for Kousei Arima. This hatred is later revealed to be an admiration of Takeshi, and how he looked up to Kousei as a hero. Takeshi looks up to Kousei to the extent of rebuking Kousei when he did not meet his expectations as a pianist. Takeshi is one of the best piano players of his generation, as mentioned for being invited to Europe for competitions and winning the majority of recent piano competitions in Japan. It was shown that prior to the storyline, Takeshi and Emi Igawa are sitting together complaining about the "emotionless" Kousei after losing to him in a piano competition. The rest of the crowd points out that Takeshi and Emi are head and shoulders above the rest of the competition, which makes Kousei all the more invincible for beating the two. In the storyline, it is shown that Takeshi looked up to Kousei as a hero, and constantly practiced in order to surpass Kousei. (Source: Shigatsu wa Kimi no Uso Wikia)
One of the best middle school pianist in the story, on par with Takeshi. She is known to play to her emotions and can be thrown off of her game with the slightest sense of discomfort. It was shown that prior to the storyline, Emi and Takeshi are sitting together complaining about the "emotionless" Kousei Arima after losing to him in a piano competition. The rest of the crowd points out that Takeshi and Emi are head and shoulders above the rest of the competition, which makes Kousei all the more invincible for beating the two. While Takeshi sees Kousei as a rival that pushes him to greater heights, Emi has a different motive. She was originally inspired by Kousei's passion and pure innocence during his first performance, she decided to learn piano under Yuriko Ochiai for the sake of expression. Over the course of the story, Emi seeks to oppose the "boring" playing style of the old Kousei in hopes to find the "true" Kousei once again. (Source: Shigatsu wa Kimi no Uso Wikia)
Age: 14-15 Birthday: July 4 Kaori Miyazono is one of the main protagonists of Shigatsu wa Kimi no Uso. She is a violinist who helps Kousei Arima return to the piano world after his mother's death. Kaori Miyazono is a free-spirited violinist whose playing style reflects on her personality. She is independent, unpredictable, and short-tempered. It is also touched upon that she is passive aggressive at times. Kaori likes to depend on herself and only herself and can be seen as more of a support for others. While considered a really sloppy violin player from a technical standpoint, such as not following music score sheets the way they are written, Kaori is an amazing violinist. Noted by one of the judges at Towa Hall during the first competition of the series, her pure abilities far exceed the others in the competition. She wields a free spirited style of performance that emphasizes emotions and artistry over the pure mechanics of music, such playing to specific tempos and dynamics originally intended by the composer. Her style of music is what rekindles Kousei's passion for the piano and inspires him to redefine himself as a musician. In addition, she has the ability to play the melodica and has had some experience playing the piano. When Kaori was five-years-old, her piano class went to see a music recital, there, she first saw Kousei. From the moment he touched the keys and started playing, she was immediately inspired by the spirit in his music. Kaori was originally an aspiring pianist herself, however later decided that she would become a violinist and have Kousei play with her. Kaori was always a physically weak child, and underwent many surgeries. Over time, her hospitalisations became more frequent and prolonged. One day, she saw her parents crying in the hospital as they realized she didn't have a lot of time left. Because of this, she decided to live a full and happy life before passing away. She put on the contacts which she never had the courage to wear, ate a lot and ignored the aspect of her appearance and played the music the way she wanted to and not how everyone else wanted her to. Then, she told a lie. It is later revealed that she wasn't able to perform with Kousei after she fell and hit her head at home, resulting in her bleeding and passing out. After this incident, Kousei rushed to visit Kaori after hearing from Tsubaki that she was hospitalised again. It later comes to a point where it becomes obvious her health is deteriorating rapidly and she can no longer hide her illness from her friends. She is shown at one stage that her illness has caused bouts of paralysis in her legs, where she suddenly falls to the ground while walking down the hallway in the hospital, unable to make herself stand up. As Kaori's final days were coming, she wrote a farewell letter to Kousei. On February 18, the day of Kousei's piano competition, Kaori had her operation. At her funeral, her mother gave the letter she wrote to Kousei. Throughout the series, she refers to Kousei as 'Friend A' or as Ryota Watari's substitute. Kaori first met Kousei when she was five-years-old at a piano recital. After witnessing Kousei performing at the recital, she was awestruck by him and immediately gave up on playing the piano as she wants Kousei to play for her. Fast forwards a few year, Kaori finally got to meet with Kousei. After getting to know each other, they both realised that they as musicians, have a lot in common. Kaori first found out that Kousei became tone-deaf when he's concentrating on playing the piano when she asked him to play 'Twinkle Twinkle Little Star' in a cafe. She then demanded Kousei to be her accompanist. Although reluctant at first, Kousei finally accepted when Kaori begged him to support her in that "moment that she's about to lose heart". Their relationship gradually strengthens and they start spending more and more time together, especially in the music room. Kousei found himself falling in love with Kaori, but held back because she was Watari's love interest. At the end of the series after Kaori's death, it is revealed that she always had a crush on Kousei and always loved him since she was young, thus having to lie about her faked crush on Watari just so she could approach Kousei. (Source: Shigatsu wa Kimi no Uso Wikia)
Age: 14-15 Birthday: March 28 Kousei is a prodigy pianist and was the youngest pianist to win the Saki Competition but quit playing after the death of his mother resulted in his inability to hear the sounds of his own playing. Following the death of his mother, he lived two years without playing the piano and saw the world through monotone colors, but this changed after meeting Kaori Miyazono, a beautiful young musician who pushed Kousei to his limits in an attempt to get his fingers back onto the piano keys. As a child, Kousei was obedient and calm. Due to his fear of his mother, Tsubaki was the only one to convince him to tag along in her adventures. Despite being afraid of her, Kousei loved his mother and played freely for her during a competition which angered her. Until later in the story, there are still traces of his mother's verbal and physical abuse that linger in his psyche. Whenever he thought about his piano days, a darkened image of his sick mother would often appear similar to that of a post-traumatic stress disorder (PTSD) attack. His last performance following the death of his mother traumatized him to the extent of leaving him unable to hear himself play. Despite being unable to play piano, music was omnipresent in his life as he would spend his lunch breaks composing. Despite having friends like Watari and Tsubaki, Kousei spends most of his day alone in his thoughts. This dense characteristic makes him a little oblivious to what is going on around him. For instance, he does not notice the resentment his fellow piano competitors had for him nor Tsubaki's crush on him. He also stares at Kaori for long, awkward periods thinking how great of a person she is which she misinterprets as him having perverted thoughts of her. Kousei admires Kaori because she is his opposite; he wishes to become more free-spirited like her. The closer Kousei and Kaori get, the more his feelings for her deepen and the more he opens up to other people. She helps him build his confidence and convinces him to perform again. Kousei became a piano player at the request of his mother's friend, Hiroko Seto, after Kousei perfectly recreated an improvised song that Hiroko was playing in frustration towards her husband. This led to his mother becoming his piano mentor and teaching him how to play. Following a collapse in his mother's health, Kousei's style of learning to play the piano was drastically changed, as his mother began beating him until he could perfectly play a song based on how it was written in the score. As a result, Kousei started becoming distant from his friends and focused solely on perfecting his piano skills in an attempt to satisfy his mother and make her happy. Kousei was then entered into a number of competitions, in which he stunned the audience with his perfect playing and attained the title "The Human Metronome" and was often referred to as his mother's puppet due to Kousei's lack of free will and emotion. Following a winning performance at the Saiki Competition, Saki attacked Kousei and drew blood, causing an outrage amongst competition attendees, but mostly between Saki, Kousei, and Hiroko, with Kousei lashing out at his mother and stating how he wishes that she "would just die. Coincidentally, Saki passes away a few days later, with the two not having spoken at all between these events. Kousei, feeling guilty about his last words towards his mother and also missing her tremendously, gradually becomes tone deaf during a competition a few days later, breaking down and later hiding in a corner of a room in the concert hall to cry, with only the comfort given from Hiroko. He later gives up being a pianist due to his tone deafness. (Source: Shigatsu wa Kimi no Uso Wikia)
Birthday: May 19 Tsubaki is Kousei's childhood friend. She has always gone to his performances and cheered him on. Tsubaki would often invite Kousei to play outside but due to his practice time with his mother, she usually ended in failure. Being with Kousei for a long time, Tsubaki gradually took on the role as an "older sister." Kousei was that "useless little brother she just had to take care of." Rather than the music type, Tsubaki was the athletic type. She was on the softball team in both middle school and high school along with her senpai from middle school where she enjoyed the sport a lot. (Source: Shigatsu wa Kimi no Uso Wikia)
Birthday: April 4 Ryouta is Kousei and Tsubaki's childhood friend who is also the captain of the school's soccer team. He is extremely popular with girls, often adopting a frivolous attitude. However, he does once in a while come up with good insight. Ryota is a bit of a play-boy. He seems to prefer girls who are "cute" seen as he comments in episode 1 that when he sees Kaori for the first time he stated that Tsubaki did a good job on finding a cute looking girl. (Source: Shigatsu wa Kimi no Uso Wikia)