both of them just doing bad right now, they're just incompatible, there's yuni that always snapped off when things not going on the way she's want to, and there's nanase who seems like didn't even try to understand yuni, her mistake is buying something for Yuki but didn't even thinking to buy something matching with yuni
"Nanase who seems like didn't even try to understand Yuni", are you reading the right series, sir or ma'am? Nanase knows if you might've forgotten. About the cheating, about Fuuko, about Yuni being a bitter bitch and everything. Also about "what she did bad", which was only 1% as bad as what Yuni has being doing forever.
This is Nanase being a bit petty but also standing her ground, finally.
Truth is, she was neglecting her obligations in that relationship but was quite reasonable overall at all times. Yuni did just as little effort and communicating as her, tho.
Educating her gf once is way easier than fucking another girl a hundred times and emotionally cheating on top. Facts.
Yuni now is full on loser cheater mode, mental in the gutter. The girl she is cheating with isn't 100% in it and she knows. Nanase still has a successful life outside of their relationship. This now is her throwing a tantrum because muh consequences. She is gaslighting and looking for faults in Nanase to deflect.
Final truth is, no matter what Nanase does, she won't ever be as bad or pathetic as Yuni.
I shat on this series a lot for switching between cringe selfinsert fanfic-ish and serious way too often and even this chapter was incredibly stiff but damn me if what is happening right now is not glorious. This chapter is the best yet and pray it keeps going like this without someone on the team having another psychosis.