Timeline is messed up! They show ruiruis father with her as a kid, and then he says that he didn't get bikkis mom until 2 years after the divorce, when ruirui and bikki are 1 year apart.............. Sketchy
@Cahilan I dunno if you'll see my comment , but , Hibiki isn't his daughter but his step-daughter so her being 1 year younger than rui is totally possible