Guess Kashikaze got a bit tired of writing completely wholesome oneshots lol. It is cool to see her branch out into other types of stories. I'm not big on any toxicity in my romance, but Kashikaze just writes characters so well that I still enjoy her toxic stuff too. I wonder if she'll ever make a non-wholesome full series at some point.
Also this reminded me of that one Lonely Girl arc with Wakana. The one where she reunited with her childhood friend who had a boyfriend now. When reading that, I was a bit worried that the other girl would leave her boyfriend to be with Wakana (I don't think a breakup, even a het one, fits that series), so I was glad it resolved wholesomely. It's kind of interesting to see how that could've turned out differently.