For Japanese learners looking to read manga in their second language, it can be difficult to find appropriate material. When searching for manga titles, Japanese learners are either told to search for shonen or shojo manga that feature furigana (smaller kana printed next to kanji) or read Yotsuba&!, an easy-to-read manga meant for kids.
Source：https://www.cbr.com/furigana-manga-not-yotsuba/
