@Guspaz I mean, depending on the smut being made safe for work (mostly? there's still some chapters I wouldn't feel great about having the rest of the workforce reading over my shoulder) fluff seems like it would be a perfectly reasonable expectation.
@Werebearguy we just barely dodged it before, back when Oneesan cleared the basement full of sorcery and Haru made a stupidly sad face.
This real slow burn in terms of plot. In fact there really hasn't been a plot heavy chapter. Aside from Haru and Ryu there still the deal with Yuu seeing dead people.
My guess is that Ryou summoned her in his youth and I have a theory that she also is the one who put him in a coma. With him awake, he'll most likely tell Yuu about the dangers of Chiyo