I legit thought he'd strike out at the tail end, and it would be a lesson about how "winning isn't how you have fun, it's about the fun with friends, regardless of the outcome", which would have been totally fine I think in a "growing up" sort of way.
But when the dad mentioned Shiranui's desire to know what it's like to "win on a team", the outcome was preordained.
The gods themselves wouldn't have stopped her Senpai from giving Shiranui that experience.
Thanks for the chapter, as always.