https://wolfhonyaku.wordpress.com/2019/10/04/kodama-naoko-the-storyteller-of-light-and-shadow/
So this would suggest that she's moved slightly away from the darker stuff, which is a shame. Still, probably my favorite artist right now. Her best stuff is just so good.
PS. Kodama also pretty openly said in the interview that Ashima and Sakura are "going at it" lol, didn't notice last time I read it
Oh my, so she does.
The typesetting is inconsistent, occasionally the mangaka is bold but usually not, with the interviewer questions having a ☆
Interviewer: She’s a bit promiscuous, isn’t she? Her classmate, Sakura-chan, is so high and mighty, but behind everyone’s back, Ajima’s kissing her and stuff.
Mangaka: Yeah they’re sneaking around… Even though she’s quite respected at school.
I: They have to be having some hedonistic relationship. I was surprised that they’re living together as well. ...
M: They’re definitely going at it like rabbits (lol)
I: Even though Ajima and Sakura are children, they’re pretty… deep…
M: And what’s more, one’s an illegitimate child, so they’re actually half-sisters. They have the same father, so it’s morally questionable.
I have to say, the manga did not convey "actual full sex" vs. "Ashima kissing/groping her sister and Sakura going along with it".