See? Senpai was cool after all. The moment she told Yamada not to butt in whatever she had with Kase, she meant it in a competitive way (be it about sports or just to have some fun teasing, considering she already knew about Kase and Yamada o3o ).
Nah that makes sense. I was more trying to emphasize how EVERY insecurity Yamada has regarding Kase, turns out to be nonexistent.
What's the problem with that? Yamada's insecurity was caused by a false rumor to begin with. When they finally cleared things out, there's no point in digging any deeper. Everything is good when it ends good!