The main characters are clearly Ichigo and Ururu. Ichigo is often known for his brave and determined nature. Ururu, on the other hand, has her own unique charm and abilities. In the fanfiction, their personalities and how they interact with each other form the core of the story.
A plot could involve Ururu getting injured while protecting Ichigo. Ichigo feels guilty and takes it upon himself to nurse her back to health. During this time, they share many intimate conversations. Ururu's vulnerability makes Ichigo more protective of her, and he starts to develop romantic feelings. Ururu, in turn, is touched by his care and reciprocates those feelings.
The 'Running Man' comic meme is usually known for its funny and exaggerated poses of the characters. It often has simple yet impactful expressions that make people laugh.
Anime boob comics often feature exaggerated female body proportions with a focus on large breasts. They might have a lot of fan service and sexualized content.
I think the main difference might be in the style and themes. 'Friren manga' could have a unique visual style or focus on specific types of stories that set it apart.
Santa Claus baby cartoons often have cute and colorful designs. They usually show Santa Claus as a friendly and kind figure interacting with babies in a magical setting.