THIS WAS SO GOOD WHATTTTT
fr this deserves more recognition
at first i thought yanai liked kazuya and was just going after gaku because he "belonged" to kazuya but later i started thinking yanai was just attached to kazuya because he never got to fight against him and he never got over it that's why he retired earlier too because his drive to fight against kazuya was what made boxing so exciting for him but then kazuya had to quit and boxing became boring...then he started liking gaku because he reminded him of kazuya in his prime
so i won't say yanai likes kazuya romantically he's just attached to kazuya and the idea of what would've happened if both of them didn't retire and he likes gaku because he reminds him of young kazuya