There are 2 books by Hikaru Katsuki on BookOrb. A strong starting point is Baby step ISBN (2013). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has Hikaru Katsuki written?
BookOrb lists 2 books by Hikaru Katsuki.
Where should I start with Hikaru Katsuki?
A good starting point is Baby step ISBN (2013).
What is the Hikaru Katsuki books in order list?
In publication order: 1. Baby step ISBN (2013), 2. Ascendance of a Bookworm (Manga) Part 4 Volume 1 (2025).