Some of the books and magazines that Aika has appeared in are as follows.

2017.03.20	From Gamers vol.235	First Love Live report, COLOR {1 P}
2017.05.11	Young Jump 2017 No 24	Aqours photo collection, poster, COLOR {11 P, cover}
2017.09.28	Young Jump 2017 No 44	Aqours photo collection, poster, COLOR {11 P, cover}
2018.04.05	Young Jump 2018 No 18	photo collection, COLOR {7 P}
2018.04.20	From Gamers vol.248	Aqours BD article, COLOR {2 P, cover}
2018.12.07	Young Gangan 2018 No.24	Aqours photo collection, poster, COLOR {9 P, cover}
2018.12.27	Young Jump 2019 No 4-5	Aqours photo collections, COLOR {9+4+5 P, cover}
2019.11.28	Young Jump 2019 No 52	Guilty Kiss photo collection, COLOR {4 P}
2019.12.26	Young Jump 2020 No 4-5	Saint Aqours Show photo collection, COLOR {6+4+3 P, cover}
2020.07.16	Young Jump 2020 No 33-34	Aqours photo collection, CD jacket, COLOR {8+4+5 P, cover}
2020.12.24	Young Jump 2021 No 4-5	Aqours photo collection, CD jacket, COLOR {8+7+2 P, cover}
2021.02.08	Aika Kobayashi Calendar and Photobook	photo collection, calendar, COLOR