@ImperialSun A book with more information on requirements will be published soon on our page, but to answer your question, all admins on this account select the books added into the lists. We all review the story for grammar, spelling/punctuation, originality, whether it is indeed inspired by anime/manga, appealing, and whether the story is well-written and keeps us wanting to read on. There are other factors, but those are the key ones.
We mostly focus on promoting stories with small reads and authors with small accounts who are struggling to get their stories out there and gain readers. As such, profiles with small amounts of followers are more likely to have their stories added than a user with a large amount of followers and reads.