Alex Reeve is a series of 2 books written by Andy McDermott. Here, you can see them all in order! (plus the year each book was published)
2 books in this series
Well... yes and no. The author Masao Ohtake wrote 19 manga Hinamatsuri total volumes. We only have 17 you can read, because volume 18 and volume 19 haven't been released outside of Japan yet.
Yup! The 12 volume anime aired in 2018 and you can even go get each Hinamatsuri volume of the show on Crunchyroll :)