Haikyuu Headcanons

Tsukkiyama

Tsukishima has always been the brooding type, he always looks irritated or annoyed. Yamaguchi has been one to notice this and tries to constantly improve his best friends mood.
Yamaguchi was walking around the school building when he heard a piano. He didn't know that many people were musicians at this school, Yamaguchi himself played clarinet and some of the flute.
He walked towards the room emitting the sounds and just listened for a while until he decided to peak in and see who made this music. Yamaguchi didn't expect to see Tsukishima in there but there he was. Sitting at the bench, eyes closed lost in the music he was playing.
Tsukishima felt his surroundings shift, something was different. He stopped playing and was mortified to see Tadashi Yamaguchi, best friend since childhood standing there smiling at him. Tsukki quickly regained his composure and smirked. Yamaguchi jumped a little bit and praised Tsukki, leaving the blond blushing and embarrassed. Yamaguchi asked questions, god he had so many questions that Tsukishima could barely answer them all.
Once Yamaguchi finished with his questions and finally comprehended that he isn't the only musician to attend this school he took a chair near the piano and just kind of watched Tsukishima, at the time Tsukki wasn't doing anything so he have Yamaguchi a questioning look. Yamaguchi ignored him and burst out with a wild thought, all he said was 'I want to play with you', Tsukishima was once again surprised but his body reacted for him by saying a simple okay.
Yamaguchi pulled his flute out of his bag extremely excited and put it together. Once he was done Tsukishima had the bright idea to ask what they were going to play. Yamaguchi had suggested a flute solo the he had found searching around with a piano accompaniment. He handed the piece to Tsukishima and let him process it before they began.
As they played they felt better than any drug induced high could produce. This was everything they've kept inside poured out in a 4 minute solo. This song had a new meaning to the both of them, it wasn't just a solo it was now this song that they got to experience, play and simply feel together. They felt the music coursing through their bones and never wanted it to end.
They finished the piece and relaxed, panting. The two looked at one another and smiled astonished at one another's ability.
The following day the pair sat at lunch with their friends. Hinata looked especially happy, much to Tsukishima's disliking. As soon as Kageyama had calmed the sunshine child down Hinata bursted out saying he head Yamaguchi and Tsukishima playing together, he pulled out his phone and played a recording of them playing. The pair were dumbfounded to say the least. Those who heard the recording clapped and told them to play together more often, or to even sign up for some sort of competition because they sound so connected, so authentic and real. Hinata couldn't wipe the smile of his face as Tsukishima discussed their potential musical careers together