What is the relationship between the demon and the girl in the manga?

I'm not really sure. It could be some kind of reference or design choice related to the Silent Hill franchise, but without more context, it's hard to say exactly.

I'd recommend 'Re:Monster' - it has elements of progression and power-ups similar to Solo Leveling. Plus, the story has some interesting twists and turns. 'Dungeon Reset' is also a good choice, with its focus on the main character getting stronger in a fantasy setting.

Harvey Dent in Batman comics is initially a symbol of justice. However, when his face is damaged, he develops a dual personality, with one side seeking revenge and chaos as Two-Face. His character adds complexity and moral ambiguity to the story.

I can think of a few like 'Muscle Girls' which focuses on girls with a passion for building muscles. Another one could be 'Strong Hearts' that showcases this theme too.

Some birds, like certain types of thrushes and starlings, eat snails.

This type of manga often features bold and unconventional themes that can be quite shocking. It may contain graphic and unfiltered depictions that go beyond normal boundaries of acceptability.

Black Clover manga concluded after a great run. It wrapped up its storylines and provided a satisfying conclusion for readers. Although it's over, its popularity remains.

Barnes and Nobles usually stocks One Piece manga in their comics and graphic novels area. But it's best to check their online store or call your local store to make sure they have it in stock.

Typically, this kind of manga may have elements like violence, horror, and unconventional moralities. The art style might be designed to evoke a sense of unease or fear.