That was beautiful. Damn near climactic (in the literary sense)!
But yes, it feels like an ending chapter and it says 'owari' at the bottom, so...I think it's complete, save for any bonuses/extras. That was a very fun ride.
Second of all: I know it's just how character design works, but I love the idea of Yoroizuka just getting out of a hot spring with perfect hair and made up eyes and lip stick, lmfao.