FL switching love interests is very natural IMO. On the contrary, I have always been annoyed by the 20 year old Josei FLs being obsessed with a man for years they never even dated once. It is just platonic obsession which I find really unhealthy.
In this story, the FL had no deep relationship...
Lel who knew my middle eastern country would be less bigot than Japan. Our people are registered as singles when they divorce, since maybe 20 years. Not that we don't know that Japanese women have it hard.
And that idiot senpai can go fuck his virgin self. That would be "pure".