PHP greater than 7.0 and everything related to MySQL.
apache2 as server and htacces enabled. Nginx maybe works too, but I didnt test it.
Some mangas and chapters of course.

Do not use yet

RoriconScans is still being built. Using it may be VERY difficult. However, everything you need to know is in "core/config.php". Once configured, login to your MySQL Database (via phpMyAdmin?) and import "roriconscans.sql". You're ready to go (if this would work properly now). For admin acces, see the file "views/pages/users.php" and edit them to your likings (also mentioned in the config). Indexing Mangas and chapters doesnt work yet, but is going to be implemented.

To-do

a lot of things... going to bed now, may add 2morrow.