 If you liked
Kuroko no Basket
|
 ...then you might like
Diamond no Kouzai
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Though KNB is a story set long after sports related trauma bears its consequences on both prodigious children and run of the mill children, while Diamond no Kouzai is a psychological exploration of the kind of situations that cause such trauma to happen, both really make a case that sometimes sports are THAT serious for the people involved, as they affect relationships, personalities, goals... just like any sort of collective human activity does. Both works make a point that sports are something to be enjoyed with others, and winning or losing isn't what's defining about them.