From what I can tell, the initial merger merged Kase-san to... into Yamada to Kase-san, whereas the separation renamed that into Kst.... while a new entry was made for YtKs, hence why your subs may be a bit messed up.
Tuesday seems like an odd day to host a track tournament, though.
edit: Ooh, just noticed the entries are now properly separated between prequel and sequel. Nice.
Of all the things I was expecting to see in a smutty yuri series in the year 2026, Puyo Puyo being played with the original Wii Classic Controllers wasn't one of them.
One small critique on pages 1 and 6. In this context 殺 is not "fuck..." but rather a cut-off version of 殺せ or "kill me", which is the go-to line for lady knights about to be defiled by orcs.