Miyuki Irie/Relationships

Masami Iwasawa
Irie's views on Iwasawa aligns mostly with everyone: that she's a cool beauty who deserves something genuine.

Since Iwasawa doesn't have much to speak about other than her life and music, as well as being mostly shy herself, she finds it difficult to start conversations with her entirely. When Iwasawa herself began to talk about topics that didn't fall under music, Irie was insanely shocked alongside the rest of Girls Dead Monster. Sekine quickly enlisted Irie, beginning a private investigation on Iwasawa and the underlying cause of this development.

Both Irie and Sekine realized the anomaly itself in Chapter 5, when Iwasawa spoke up about wanting to hear Otonashi's story.

Hisako
Unlike Sekine, Hisako doesn't really punish Irie as much, often seeing her as a victim of Sekine's relentless brutality of misconduct. Whenever Hisako corrects Sekine, Irie thanks her and apologizes for the trouble that she assumes she caused. Hisako often responds that it isn't her fault and that Sekine usually doesn't know what's considered too far.

Shiori Sekine
Forced to becoming Sekine's best friend due to their life style and their lack of relation to both Hisako and Iwasawa, they usually conduct their daily life together. Overtime, she's become more comfortable around Sekine, though often berates her for the way she treats her sometimes.

On occasion, Sekine treats Irie like a little kid, often embarassing her and putting her in uncomfortable situations. While it may go as far as borderline bullying, Sekine truly cares for Irie's wellbeing. She expresses her care through light-hearted moments such as practical jokes, metaphors, and constant hugging.

Sekine's nature of mischief usually drags Miyuki alongside her, often getting both of them in trouble.