I'm not sure specifically what 'Reader458' refers to in the context of adult fanfiction. It could be a reader number, a code name for a reader within a particular fanfiction community, or perhaps a username on a relevant platform.
It depends. Some manga reader apps are legal if they have the proper licenses and permissions to offer the content. But many are not, as they violate copyright laws.
Some fanfictions might have a theme of cultural exploration. If the 'adult so' and 'adult reader' are from different backgrounds, they can explore each other's cultures. Power dynamics can also be a theme. There could be a situation where one character has more power in a certain aspect than the other, and how they navigate that in their relationship. Additionally, a theme of family - related issues can be explored, like how their relationship affects their families or vice versa.
MangaZone is a good one. It has a large collection of manga, and the search function works well. The app is easy to navigate, making it convenient to find and read your favorite manga.
You need to start with a solid programming language like Java or Python. Then, focus on creating a user-friendly interface and integrating a reliable image viewer for manga pages.
The safety of a manga reader app varies. You should look for apps from trusted sources, read reviews, and check if they have proper security measures in place. If an app looks sketchy or asks for too much personal info, it's probably not safe.