@Autumn
Manga spoilers ahead~
Fujikawa wanted nothing to do with Teru and the SNS club at first, but she ended up joining because she was intrigued by Murakami. Then Teru and her weirdness slowly won her over. The language and visuals imply pretty heavily it isn't just admiration or friendship, so it was nice to get a confirmation in the OVAs. I think her feelings were mutual, but neither girl voiced them clearly before Teru graduated because the author unfortunately likes his yuri sad and/or Class-S. Fujikawa speaks about Teru in the past tense, but it's obvious she's still affected by her even now.
(Just noticed that there actually are raws, I didn't look hard enough.)
I have no expectations that this subplot will end the way I want it to (although I think it will be addressed again). But I'm invested in Fujikawa's character rather than a specific pairing for her, so I don't mind that much.