Well, to put it simply, I can't say anything about Sakura and the fuckboi because we haven't seen anything about them or their relationship, but as for Fumi and Shinobu, we have seen that Shinobu is willing to give Fumi a chance and take her seriously, but that takes time because Shinobu just got over a breakup with Sakura, and I think that even if it’s been shown that Fumi and Shinobu could end up together, we won’t have an answer anytime soon, and that’s normal. Shinobu can’t just go from thinking about Sakura in 131 to telling Fumi “I love you” in 133; that takes several chapters.