Sheesh, called it back when he "vanished" that somehow he got knocked unconscious when hit by the ricochet, which makes no sense at all since he is used to hit balls anyways every match. Maybe if she had climbed in the bathtub with him again like she usually did before now he would have woken up before the axe.
Even got the "their adventures will continue" style ending too with a tournament that we'll never see. Though I suppose for a manga with a premise as absurd as this, nearly twenty chapters isn't bad.