Aw man, I thought Nene's actually back, but page 1 was just bait. Or technically fanservice for fans who wanted to see her again.
Considering that this manga is at times a kind of cautionary tale about college life, I'm not surprised at how this also takes little jabs at JP streaming culture on YT.
I do appreciate that Mahina isn't completely useless anymore, she's actually putting her ghost magnet affinity to use here so Kaoru can exorcise them all at once after they gather.