I'm not sure specifically as I haven't read this novel. But 'ore' means 'I' in Japanese, and 'parry' might imply some kind of defensive or evasive action. It could potentially be about a character who claims to be able to parry all things, perhaps in a battle or challenging situation.
Popularity of a visual novel can be measured in different ways. It could be by the number of downloads, the amount of fan - made content, or the buzz it creates in relevant communities. Since we don't have any information on these aspects for this particular visual novel, we can't accurately gauge its popularity.
Since the title mentions 'heroine', it could imply themes of heroism from a different perspective. Instead of the typical male hero, it's a male character with a heroine - like self - concept. This might lead to themes about breaking stereotypes. Also, there could be themes of growth and adaptation as the character navigates the story with this distinct identity, dealing with situations that come their way and how they change as a result.
I'm not sure specifically as I haven't read it in detail. But generally, a light novel with 'ren'ai game' (love game) in the title might be about a story set in a world related to a love - themed game, perhaps with the main character's real life being intertwined with the events in the game.
You could start by looking in local libraries. They often have a diverse collection of novels, and if they don't have it in their physical inventory, they might be able to order it for you. Also, some specialized Japanese bookstores, either physical or online, could be a good place to search. There are also some e - book platforms like Kobo or Google Play Books that might have it available for download.
Since I'm not familiar with this particular light novel, it's difficult to name the main characters. However, in a love game - themed light novel, we can expect characters like a male or female protagonist who is likely to be involved in the love - related scenarios and other supporting characters that might be friends, rivals in love, or family members who influence the main character's journey in this 'love game' reality.
One possible theme could be unrequited love. The title gives the impression that one character has feelings for another who might not be aware or reciprocate right away.
I'm sorry, I'm not very familiar with this light novel specifically. But generally, a light novel often has unique characters and an interesting story. It might be about some kind of relationship between the characters where one has an unexpected or special feeling towards the other as the title seems to imply.
Honestly, I don't have the exact number off the top of my head. But a quick search on popular book platforms or fan forums might give you the answer you're looking for.
I'm not very familiar with this specific light novel. But some popular light novel series like 'Sword Art Online' and 'Overlord' might have similar elements in terms of the fictional world - building and character development. You could also check out light novels from the same publisher or author's other works for similar styles.