There really is alot of free manga!
You also don't have to sign up, you can just start reading :)
@animenewsnetwork.comShueisha has launched the new global digital platform Manga Million!
animenewsnetwork.com
Shueisha Launches Manga Million Digital Platform Worldwide With Titles in 100+ Languages
Application has over 1 million pages of translated manga from 400 titles including ONE PIECE, Naruto, Bleach, Demon Slayer, Jujutsu Kaisen, Kingdom, Oshi No Ko, Nana, more