Not sure if it was a hentai or not, but here's the details I could remember
So it starts with a girl dressing up and was seen by her little brother (I guess since I don't understand jap at that time) and she scold her brother
Afterwards there is this heavily armored dude who climbed up the window, tied up the girl and was checking her pussy
When he heard her brother, he abducted the girl
The next scene would be the girl tied up and was bathed with slime that removed her clothes
Then she is sitting beside a throne with only a robe covering her
The setting was more medieval fantasy and the art style is really old, so I hope someone knows this, sorry if the details wasn't that much helpful, but that's all I could remember
So it starts with a girl dressing up and was seen by her little brother (I guess since I don't understand jap at that time) and she scold her brother
Afterwards there is this heavily armored dude who climbed up the window, tied up the girl and was checking her pussy
When he heard her brother, he abducted the girl
The next scene would be the girl tied up and was bathed with slime that removed her clothes
Then she is sitting beside a throne with only a robe covering her
The setting was more medieval fantasy and the art style is really old, so I hope someone knows this, sorry if the details wasn't that much helpful, but that's all I could remember