Umezono wants to be a couple with Wakaba, but she has the assumption that Wakaba rejected her when kids, so in her jealousy, she wants Wakaba to hate her (if Ume can't be what Wakaba loves the most, then she will be what she hates the most), the opposite of her original plan, but in order to achieve that, she does the opposite of the opposite, so she does (or forces) couple's activities to get hated from Wakaba, and it's working? and Wakaba gets her intentions but she gets the opposite effect from this scheme, in other words, a master-pet relationship with a stocolm syndrome effect but not really? Is this gonna end in Mission Failed Successfully?