He was able to play on par with Yumiko in tennis, even though he never played double tennis before.He can also play guitar, which is shown by his clique's performance of musical concert in the cultural festival.
Dating violence wiki
Hayama also was mentioned to have too much pride by Haruno.
Hayama once admitted to Hachiman that he is not a nice guy as everyone thinks of him.
He tells Hachiman that it is the best choice in his opinion.
Hayama defends the image of "Everybody's Hayama" by fulfilling everyone's expectations imposed on him.
During the athletic festival he single-handedly kept his white team ahead of the Red team.