Amazon Japan 2018 Digital Comic Ranking
Amazon had published their Kindle Manga ranking for 2018, the aggregation period was( November 13, 2017 - October 31, 2018)
The following list is the top 20 series based on sales within the aggregation period.
They had also released their ranking for physical comics.
1. Attack on Titan (Isayama Hajime)
2. Dungeon Meshi (Ryōko Kui)
3. Hunter x Hunter (Yoshihiro Togashi)
4. Kingdom (Yashuhisa Hara)
5. Golden Kamuy (Satoru Noda)
6. Tensei Shitara Suraimu Datta Ken (Story: Fuse | Art: Taiki Kawakami)
7. Yuru Camp △ (Afro)
8. Goblin Slayer (Story: Kumo Kagyu | Art: Kōsuke Kurose)
9. Made in Abyss (Akihito Tsukushi)
10. Nagi no Oitoma (Konari Misato)
11. 1-nichi Gaishutsuroku Hanchō (Story: Nobuyuki Fukumoto, Tensei Hagiwara | Art: Motomu Uehara, Kazuya Arai)
12. Hinamatsuri (Ohtake Masao)
13. Karakai Jozu no Takagi-san (Sōichirō Yamamoto)
14. My Hero Academia (Horikoshi Kohei)
15. Chuukan Kanriroku Tonegawa (Story: Fukumoto Nobuyuki, Hagiwara Tensei | Art: Hashimoto Tomohiro, Miyoshi Tomoki )
16. Otoyomegatari (Kaoru Mori)
17. Yōjo Senki (Story: Carlo Zen | Art: Chika Tojo)
18. Tokyo Ghoul:re (Ishida Sui)
19. One Piece (Eiichiro Oda) [Volume 51 -90]
20. Uchuu Kyoudai (Koyama Chuuya)