Huh.. if you want to keep your "tranquil everyday life" you really should just off her when you get the chance before she escalates any further. The way the guy goes about it is sleazy, but if he can make those girls happy and most importantly, ALIVE then silver lining I guess. I'm partial to yandere s but this one has completely lost it from the get go. Best to just put her down.
And if this is really going bad end as the feel we get through chapters at the very least those two take each other out. Those three girls are innocent in this