Tsukkishima likes Yamaguchi, and everyone knows it. Everyone is also pretty sure Yamaguchi reciprocates. When Tsukkishima finds the courage to actually confess, he's met with rejection. The reason, however, is not what he would expect, but in hindsight, he isn't that surprised either.
(Warnings(that I can tell without spoiling anything): Internalized homophobia, mild swearing, homophobia, homophobic slurs, panic attacks,ect.)
If boy X boy isn't your thing, I highly suggest you don't read this
Tsukishima and Yamaguchi find that everyone on the team thinks they're just best friends. Clearly, the best option is to push the PDA until someone figures them out.
You can check this out on my Ao3(MariachiMermaid) under the same title