His Lie in April - 四月の彼の嘘 (Shigatsu no Kare no Uso) (COMPLETE)

Our Story, Part II

NOTE: This, the preceding chapter, and the next one will follow the original story. After the next chapter, as stated, things will partially follow the original from until episode 13 of the anime/chapters 24 to 26 of the manga. After that latter point (chapter 38, published as of May 22, 2019), things will start to diverge from the original story entirely.
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Saki's death had also affected Kousei as well, as shortly after the incident and her death, he stopped playing the piano altogether for a couple years; the incident had made him tone deaf, and it really did a real number on his skills. 

Also compounding his problems was that he had become very distant with his friends. But even with this, almost seven years after Saki's death, and with Kousei now being 15, music could never leave Kousei's life. He will listen to music through a music player and write musical notes on a music sheet. That's all he could do during school.

One day, however, Kousei found himself on a path that would eventually lead him towards his whole musical skills coming back to him again. Tsubaki Sawabe was now a softball player, and Ryota Watari played soccer. 

Kousei was minding his own business when a softball that was hit by Tsubaki landed in the music room and knocked Kousei out cold. This led to Kousei and Tsubaki cleaning up the room, but they were reprimanded by the school's vice principal. After that was done, they stopped for some ice cream, and Watari received a text from a girl and rushed off to meet the mystery girl, leaving Kousei and Tsubaki out in the cold, figuratively speaking. Another day passed, and Kousei met up with Tsubaki and Ryouta at a park, and the two of them showed up late. While walking around a park, 

Kousei could hear a melodica playing "Pazu's Fanfare" from the movie Laputa: The Castle in the Sky. Who was playing it? Why, it was a beautiful, petite blond-haired girl, who was with three other kids cheerfully spectating and subsequently joining in her playing of the song with their own instruments. 

Kousei became enchanted by this beautiful girl's music, and unbeknown to her, a gust of wind flew in their direction, and this sent the girl's skirt flying, and Kousei inadvertently took a picture of her with the skirt up. 

This led to the girl becoming enraged over the photo, and she had also noticed that Kousei had her leggings in his hands, believing that he intentionally grabbed them, leading to her confusing him for a sick teenaged pervert, and comically thrashed him again over the leggings, even though what Kousei did was unintentional. 

"You damn pervert, you took my leggings, and you took a picture with my skirt up pushed by the wind!!" 

Thankfully for Kousei, Tsubaki and Watari came onto the scene just as the girl tried to strangle Kousei with her recorder. Tsubaki then introduced the mystery blond girl. Her name was Kaori Miyazono. 

She later apologized for Kousei for beating him up like that, because she thought that he took her compromising picture intentionally, when it wasn't. 

After all that, Kaori realized she had to be over at Towa Hall to be at the violin competition going on there. It was at that point that Kaori specified to Kousei she was a violinist. Kousei turned down her invitation to be at Towa Hall, but Kaori dragged him in against his will. 

As she performed at the hall for the violin competition, she, for some unearthly reason, decided to leave her accompanist behind, an action to which the judges disqualified her, because they deemed she tried to make the set piece her own. 

However, this didn't stop Kaori from receiving a standing ovation for her captivating performance, and what saved Kaori was that the audience really enjoyed what she had put forth in her performance and was chosen as the audience choice to go through the next round. Kaori's face was saved..... at least for now.