SPOILERS for volume 2
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So far in the 3 chapters that have been released there has only been 1 sex scene (more like Mizuki jerks Tooru off while his hands are tied) and nothing more.. I hope we’ll get more stuff in the next chapters.
Idk where exactly the plot is going but it’s been more casual stuff like Tooru trying to find a job and we’re introduced to Mizuki’s ex-girlfriend who is now just friends with him (they dated briefly but both are S, so it didn’t work out) and it seems she’s kinda interested in Tooru but I don’t think she’s going to pursue him since she found out Mizuki and him are dating.

I don’t know if it would help anyone, but I just bought the available chapters for volume 2 I found online (3 so far) in a Japanese manga reading app.
If someone is interested in translating it, I can give you the screenshots!