3:11 "Kawaru" was sung by Karin, Kanata's voice was not that deep and not has the "onee-san" vibes 3:20 i don't think this part was sung by Nijgasaki, it's clearly sing by some of them not all, you can compare this part with 3:24. but i only hear Kasumi & Ayumu, i don't know the others who sing with them at 3:20
Nijigasaki High School Idol Club Colors Emma Verde: Light Green Mia Taylor: Platinum Silver Kanata Konoe: Violet Purple Karin Asaka: Royal Blue Ayumu Uehara: Light Pink Setsuna Yuki: Scarlet Red Lanzhu Zhong: Rose Gold Ai Miyashita: Ultra Orange Rina Tennoji: Paper White (Sometimes Gray) Kasumi Nakasu: Pastel Yellow Shizuku Osaka: Sky Blue Shioriko Mifune: Jade Green 🌈 Wherever you are, you are you🌈