This manga is so damn messy, I love it!
Yuni is evidently someone who struggles with being seen, being heard and, I don't mean this in a bad way, feels a lack of attention in her life.
She uses social media to cope with that and her GF, for understandable and personal reasons, doesn't want their relationship to go public and lacks commitment to it. She lacks validation and attention, at a time in her life that's really difficult for a LGBT teen.
Then Fuuko appears, and she is exactly what Yuni needs in the short term but not in the long one, what she wants and what she fears : a constant source of devotion, attention, and commitment. And what's brilliant about Fuuko's character is that she also provides the other edge of that sword : depersonalisation, obsession, and lovebombing.
Fuuko was right : she put more into that slap, that response to manipulation and the attention one has to go through to pull it off, than either of the kisses, because those feelings were undivided, raw, with nothing else in her mind but response to attentive and manipulative Fuuko.
Fuuko's a monkey's paw wish : what you need (attention) in a way that will destroy you (manipulation). Incredible.
This is going to be a miserable trainwreck, but such an enjoyable one!! Thank you so much to the team for their work!