The best replacement for manga is anime.

The best alternatives to manga are rated as following:
★★★★★  anime
★★★  comics
★★  manhwa
★★  light novel
★★  manga
★  american comics
★  anime first
★  comic books
★  anime naruto
★  comic
★  anime difference
★  anime better
★  anime attack on titan
★  novel
★  western comics
★  graphic novel
  anime one piece
  graphic novels
  bypass gastrico

Your alternative for manga is not listed? Suggest!
Speaking about manga, one probably shouldn't forget about anime.

Other search terms related to manga and their ratings are:
★★★★★ anime
You have in mind a companion for manga and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of manga in all years. Click on graph for more.
manga
anime
comics