I'm not entirely sure as I haven't directly experienced this visual novel. But generally, a visual novel often tells a story. It might be about a mother and perhaps something related to a fourth - grader. It could involve family relationships, daily life in a school setting related to a fourth - grader, and the role of the mother in that context.
I'm not sure where you can specifically find this visual novel. It might be available on some Japanese - focused visual novel platforms or specialized gaming stores that deal with niche or Japanese - origin visual novels.
Since we don't really know much about what 'ane erotica' actually represents in the context of these archives stories, it's tough to gauge their popularity. There could be a small, dedicated community that enjoys them, but without more exposure or promotion, it's unlikely to be a mainstream popular thing. It could also be that they are just starting out and haven't had a chance to gain a large following yet.
Since I've not heard of this 'ane chijomax heart novel' before, it might be a story centered around the concept of 'heart'. Maybe it's about a character named Ane Chijomax and their emotional journey, or it could be a fantasy story where the 'heart' has some special significance in a fictional world created in the novel.
Well, without more information, it's difficult to say precisely. It might be a unique visual novel that focuses on a specific genre such as mystery. Maybe it has characters with their own complex backstories and the story unfolds as you progress through the visual novel, with different choices leading to different outcomes. However, this is all speculation without further details.