That Grisaia OVA was amazing.
It starts out with Yuuji being sexually molested by his sister. Then he murders his father and his mother hangs herself. He’s taken in by a man who makes him dress up as a loli maid while raping him. Then he murders someone else who tries to rape him and gets sent as a child soldier to the terrorist training camp where he’s forced to murder his best friend.
Finally, he’s “saved” by an older woman, who also rapes him and lets her friend rape him. But he likes it this time so there’s nothing bad about it, even though he’s a ten year old child. She gives him a puppy as a gift.
The next day, his puppy is eaten by a bear.
And that’s just the beginning.