Yashiro Nene was, by all means, your everyday ordinary girl. An ordinary girl who had a crush on an older boy and wanted to impress him. Knowing that he liked girls with feminine traits, she did everything she could to make herself appealing to him. She learned how to cook, sew, and even got into gardening. She did everything she could have done, building herself up for three long years, and finally confessed her feelings to her senpai...
Only to be soundly rejected. But if that wasn't enough, her senpai continued to state his reasoning. That not only did he not even know her, but that she wasn't even his type due to her "fat radish legs".
She was, understandably, crushed. Her first love and rejection was about as brutal as you can get, and against all odds... the sheer negativity that formed in her heart was enough to begin forming into an actual Nightmare. With her at the center, her figment was in extreme danger... but fortunately for her, she was saved just in time by a knife-wielding Dreamer who she would later identify as Dreamer Hanako.
Unfortunately, due to a combination of Nene's own imagination and the vagueness of her memories in the Dreamsphere at the time, she mistakingly remembered Dreamer Hanako to be tall, handsome, and incredibly chivalrous. Needless to say, Nene fell head over heels in an instant... though at the very least, this did help her get over her prior rejection very quickly.
With her sights now set on a completely new boy, her focus then shifted entirely towards becoming a Dreamer, and she started trying just about every method she could find in regards to becoming one. Guides on how to have lucid dreams, a strict sleep schedule, and so on and so forth. Whether any of this actually helped is... debatable, but in the end, she got what she wanted.
She became Dreamer Koi and immediately set out to transfer over to Yumemigaoka in hopes of finally reuniting with her dreamly prince...