Mitsuki is friends with both Takayuki and Haruka, but secretly she has feelings for Takayuki. In high school she was a competitive swimmer, but shortly after Haruka's accident, she finds herself leaving swimming to tend to Takayuki. She throws herself at Takayuki when he fails to climb out of his depression, and reveals her feelings for him. Mitsuki is well-meaning, but suppresses her feelings, allowing them to bottle up and explode in dangerous ways. Mitsuki also believes that she is responsible for her friend's accident, as she was the main reason why Takayuki was late for his date with Haruka. (Source: Wikipedia)
4th-year Violin student. His father owns a Chinese restaurant "Uraken" right next to the university. He is something of a prima donna whose violin technique is seen by himself to be deeply personal but by others to be simply sloppy. He sees Chiaki as a rival for attention and tries hard to compete with his "Princely" image of him. He likes Nodame for her free-spirited ways. He is the concertmaster of the S Orchestra conducted by Chiaki, and a violinist in the R☆S Orchestra. He is also the one who thought that performing like Jimi Hendrix, and adding a touch of 'rock' would give quality despite that it looks dumb in an original orchestra (as stated by Chiaki). He is currently dating Kiyora Miki.
Patty Crew was originally part of BLACK PHANTOM. In a mission with Kaoru, Momiji, Kazura, Kagari, Mio and Momotarou, Patty was the target to be saved from the organization. She was being used to destroy P.A.N.D.R.A. Although Kaoru destroyed the grip on her by BLACK PHANTOM, she tried to kill herself because of mind-control self-destruct programming after a loss. Hyoubu speculates that the triple boost was not a complete success because of this fact. In the end of the anime and also in recent manga chapters, Patty has been shown to have joined P.A.N.D.R.A. Comically, Patty has a large interest in yaoi pairings, due to Hy�bu just copying how Bullet and Tim Toy were treated during their recovery with somewhat little regard, and her normal taciturn personality will change upon seeing any of the male members of P.A.N.D.R.A. (or even male members of B.A.B.E.L.) in questionable situations. This extends to the omake pages where Patty apparently draws doujinshi with male pairings for a hobby, and visits comic conventions and otaku-related places such as Akihabara. When Hy�bu goes unconscious and Yo is suggested to give him mouth-to-mouth recisitation, at which he begs her to help him get out of the situation, but she just says that she wants to draw the situation. In recent chapters, Patty transferred into The Children's class with other P.A.N.D.R.A. members as new students. (Source: Wikipedia)