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Actually I think it's exactly because they end up in different teams that made the ending excellent and realistic. If it's just your typical good ending, it can be boring.
Well, it's only in high school they end up on opposite sides. I bet they play on the team for Uni and that lasts longer. Four years.
As long as Tachibana doesn't get another injury he could play pro. Same for Hiiragi. Who knows, they could end up on the same pro team because of how good their chemistry is.

i'm really disapointing akane and his parterner should have end up in the same team to nostalgique to much dilema to end things that way regret starting reading that manga give us some happy end life a ready taste like crap