Gawd why can't she just get lost already...
Why do people even like ruka anyways.. She's a crybaby who crystal every time something doesn't go her way, blackmailed MC into a relationship despite knowing full well he like the other girl, and is a habitual liar about a made up heart disease that HAS NOT ONCE BEEN BROUGHT UP AGAIN all to guilt trip the MC. That's who that girl is. Just like the MC, she also has had zero character development since that time. Nothing. She still cries about everything in order to guilt trip people into going along with what she wants.