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2. Alverson, B. (2018b, February 26). Manga trends in 2017—And some hints about what to expect in 2018. Icv2. https://icv2.com/articles/news/view/39721/manga-trends-2017
3. Anime Click. (2020). Website and database on manga/anime. Animeclick.it/ricerca/anime.
4. Anime News Network. (2012, January, 23). Japan’s comic sales totaled 271.71 billion Yen in 2011. Anime News Network. Animenewsnetwork.com/news/2012-01-23/2011-comic-sales-totaled-271.71-billion-yen-in-japan