Overall, the reliability of Mangakakalot's manga is uncertain. It often hosts unauthorized scans, which might have quality or accuracy issues. It's best to use legal and official sources for reliable manga content.
I wouldn't recommend downloading manga from Mangakakalot. It's not a legal way, and it can lead to problems. Try looking for official manga apps or websites that have proper licenses.
I'm not very familiar with the 'gin no juujika to draculea light novel'. But from the title, it seems to combine several interesting elements. 'Gin' may refer to silver, which could have various symbolic meanings in the story. 'Juujika' usually represents a cross, which might be related to religious or cultural aspects in the novel. And 'draculea' is likely to be related to Dracula or vampire - like creatures. It might be a story about a battle between good and evil, with these elements playing important roles in the plot.
I wouldn't recommend downloading manga from Mangakakalot as it might not be legal and could pose risks. It's better to use legal platforms for manga reading.
You can try looking for it in local bookstores that specialize in light novels or Japanese literature. Sometimes they have a section dedicated to such niche works.