Yuri manga focuses on romantic or emotional connections between female characters, while hentai pururin often contains more explicit and adult-oriented content.
I think it could suggest that love is so intense and obvious that it's being visually represented by something as strange as eyes pooping it out. It could also be a part of a unique and fantastical story or art style.
Cartoons of war usually have elements like detailed battle scenes, expressions of fear or determination on characters' faces, and maybe a commentary on the futility or necessity of war. They can range from serious and realistic to more fantastical or allegorical depictions.