You're basically halfway through the series, now.
I should inform you that after you reach the end, you should watch the KLK OVA (Original Video Animation), a special post-series episode that came out last September. This is more or less the "true" series finale.
My understanding was that they had 25 episodes on order, but during production, it got slashed to 24. Because of this, they had to cram the denouement in a credits montage in episode 24, and seem to have shifted the actual series resolution in a separate episode. Episode 24 ends rather abruptly, and may feel rushed as a result of these production factors.
Plus, the OVA completes the KLK experience. So you gotta git dat, son.