is this a....

is this a anime or just a h-manga or even a reg manga...plz tell me
https://www.fakku.net/viewmanga.php?view=2176
https://www.fakku.net/viewmanga.php?view=2176

I think this is hentai...

That's hentai.

Tsukasa is scary.

Hentai. And agreed.
She reminds me of Yuno Gasai from Mirai Nikki.