I've gotta ask, what's the LN/web novel like past this point? Is there much more drama, do either Aya or Marika ever have sex with some one else, or is it mostly just smut of the two of them?
I don't mind a full spoiler reply I need to know if I am going to hate reading this or not.
Alright spoilers incoming. I'll use spoiler brackets for actual events but themes are just going to be out in the open.
Keep in mind that the manga is a somewhat streamlined story, the events are pretty much just the first and half the second books but thematically Marika's whole journey is in just that small chunk, the books spread it out more.
Vol 1 is about Marika realising that she likes Aya. Its chief antagonist is Asta, who is Marika's foil as someone who has already embraced her sexuality and doesn't see a problem with standing out.
Vol 2 is about Marika embracing Aya as her girlfriend and getting to know more about her. Its chief antagonist is Sae the girl who tried to stab Aya in middle school, she is Aya's foil in that she used her trauma as an excuse to stop moving forward rather than rebuilding herself.
Vol 3 is about Marika struggling with her internalised shame about dating someone of the same gender, she's still not there folks. Its chief antagonist is Reina who discovers Marika and Aya are going out, she functions as a kind of nega!Marika, someone who uses her popularity for evil and has not grown out of her homophobic beliefs.
Vol 4 is about Marika bonding with other queer girls and finding community outside of weird sex stuff with Aya. Its chief antagonist (not really) is Natsumi who gets rejected at the end, exposing Marika to a different way to be queer. Vol 4 is really special because of how much it grounds Marika's sense of queerness. A lot of stuff happens in this one despite it feeling like a filler episode.
Vol 5 is about Marika placing herself within the queer community and thinking about the future of her relationship. Its chief antagonist is Karen whose backstory we finally get as she leaves town for a week to chase the woman she fell in love with fresh out of high school. Marika has to grapple with her relationship to Aya not being uniquely special and therefore subject to all the regular struggles a relationship goes through. Nevertheless she comes out publicly at the end. I cried.
Vol 6 I haven't read yet but I'm looking forward to it! These crazy kids are still in love and still not quite done stepping on each other, I love reading about them.