I honestly find it quite disgusting how much you sexualize the Asagao characters. They're kids. Don't draw borderline porn of kids, it's gross and harmful.
Depicting teenagers making out with other teenagers isn’t borderline porn, nor is it sexualizing kids. First of all, REAL teens already do this, and if they share a peer group, rather than a teen and an adult, then no one is being wronged here either. This isn’t harming anyone.
Secondly, nothing explicit has been produced here. There are no boobs or dicks out, and the closest thing to nudity has been a shirt off, something you will see at any beach.
Thirdly, you do realize that what’s on here is no different to what is on TV or movies all the time, right? Buffy the Vampire Slayer and Skins come to mind immediately. There is FAR worse content out there on Tumblr, of teens who are actually being depicted blatantly nude or having sex, and in wrong situations.
Please update your blacklist for tags like nsfw, nsfw asagao, and sparkle sin. That should help.