It mainly attracts those who have a specific interest in such content. Maybe they find it visually stimulating or enjoy the fantasy aspect.
The appeal might lie in the visual aspect for some, as it offers a certain kind of aesthetic.
It's a rather odd combination. Big tits comics typically focus on physical appearance and fantasy, while science is about facts and knowledge. The two don't have a natural connection.
Big tits hentai comics might appeal to certain individuals because they offer a form of adult entertainment that caters to specific preferences. It could be the combination of the sexualized imagery and the fictional scenarios that attracts them.
Since I don't know the exact origin or content of the 'big tits expansion story', it could potentially be about a character in a fictional story who experiences some form of growth or expansion in an aspect related to the description, perhaps in a very strange or creative fictional world. But again, this is all speculation without more details.
The appeal could lie in the visual emphasis on a particular trait. For some, it creates a more alluring or eye-catching character. However, it's also a matter of personal taste and the way the story incorporates this feature.
It's often about the visual aspect and the fantasy it creates for some readers.
It's likely that the appeal lies in the mix of magic and sensual imagery. The idea of a witch with enhanced physical attributes creates a unique and enticing fantasy world for some readers.
The appeal of such comics could be the novelty and the combination of two distinct elements. But it's not for everyone and might be considered inappropriate or niche by many.
The appeal might lie in the fantasy and visual elements they offer. Some people find it exciting and visually stimulating.